TI-83 Plus GeoMaster
ti
Application
Getting Started
Start here
How To…
Draw Objects
Compare Objects
Store Data
Transform Obj ects
Display Information
Move Objects
Examples
Performing Calculations
Displaying Equations and Coordinates
Comparing Objects
More Infor m a t ion
Quick Reference Guide
Customer Support
7/31/01 © 2001 Texas Instruments
Important Information
Texas Instruments makes no warranty, either expressed or
implied, including but not limited to any implied warranties of
merchantability and fitness for a particular purpose, regarding
any programs or book materials and makes such materials
available solely on an "as-is" basis.
In no event shall Texas Instruments be liable to anyone for
special, collateral, incidental, or consequential damages in
connection with or arising out of the purchase or use of these
materials, and the sole and exclusive liability of Texas
Instruments, regardless of the form of action, shall not exceed
any applicable purchase price of this item or material. Moreover,
Texas Instruments shall not be liable for any claim of any kind
whatsoever against the use of these materials by any other
party.
Graphing product applications (Apps) are licensed. See the
terms of the license agreement
for this product.
GeoMaster, TI-GRAPH LINK, and TI-Cares are trademarks of Texas Instruments.
All other trademarks are the property of their respective owners.
TI-83 Plus GeoMaster™ Application Page 2
What is the GeoMaster Application?
The GeoMaster™ application is a Flash software application that
runs on the TI-83 Plus. Using this application, you can draw and
transform objects, working with them interactively. The
GeoMaster application also allows you to graph equations from
the Y= editor and stat plots on the same screen with objects you
draw using GeoMaster tools.
Following are some of the things you can do with the GeoMaster
application:
Draw points, lines, segments, circles, and polygons.
•
Translate, reflect, rotate, and dilate objects.
•
Measure lengths, areas, perimeters, angles, and determine
•
slope.
Display equations of circles and lines and coordinates of
•
points.
Store measured values in TI-83 Plus lists for plotting and
•
analysis.
TI-83 Plus GeoMaster™ Application Page 3
What You Need
To install and run the GeoMaster™ application, you need:
A TI-83 Plus calculator with version 1.13 or later of the
•
operating system software to optimize the performance of your
calculator and the application
of the latest operating system software from
education.ti.com/softwareupdates
TI-GRAPH LINK™ computer-to-calculator cable. If you do not
•
have this cable, call your distributor, or order the cable online
from TI's online store
9-pin to 25-pin cable adapter (required only if you are
•
connecting to a 25-pin serial port on the computer).
TI-GRAPH LINK software that is compatible with the
•
TI-83 Plus. You can download a free copy of this software
from education.ti.com/softwareupdates
.
. You can download a free copy
.
.
Where to Find Installation Instructions
Detailed instructions on installing this and other applications are
available at education.ti.com/guides
installation instructions.
TI-83 Plus GeoMaster™ Application Page 4
. Follow the link to Flash
Getting Started
Tip
After you press
n
, you can press
e
G to move to the first
application name that begins with a G.
Work through this exercise to become familiar with the basic
features of the GeoMaster™ application. In this exercise, you
draw a triangle that is circumscribed by a circle, and then move
the triangle to see what happens to the circle and the
perpendicular bisectors.
Start the GeoMaster application.
1. Press
n
2. Select
to display a list of applications on your calculator.
GeoMastr
. The information screen is displayed.
3. Press any key to continue. The main screen is displayed.
TI-83 Plus GeoMaster™ Application Page 5
Draw a triangle.
1. Select
DRAW
(press
S
) to display the drawing menu
options.
2. Select
¯
, or press 5, the number that corresponds to Triangle).
Triangle
(move the cursor to Triangle, and then press
3. Use the arrow keys to place the cursor where you want the
first point of the triangle to start, and then press
¯
.
4. Use the arrow keys to move the cursor away from the point.
The first segment is drawn.
5. Press
¯
to create the second point and complete the first
segment.
6. Move the cursor away from the second point. The second
segment is drawn.
7. Press
¯
to create the third point and complete the
second segment.
TI-83 Plus GeoMaster™ Application Page 6
8. As you draw the second segment, the last segment of the
Tip
You can press the number (or
e
plus the letter) that
corresponds to the menu item to select it. For example, to select
Perp Bisector, you can press
e
H
.
Note
You must move the cursor to within two pixels of the triangle
segment to draw the perpendicular bisector.
triangle is automatically drawn. To complete the triangle,
move the cursor away from the third point.
Draw perpendicular bisectors of two sides of the triangle.
1. Press
V
to display the menu bar across the bottom of
the screen.
2. Select
DRAW
, and then select
Perp Bisector
.
3. Use the arrow keys to move the cursor to one side of the
triangle, and then press
¯
. The perpendicular bisector of
that segment is drawn.
TI-83 Plus GeoMaster™ Application Page 7
4. Use the arrow keys to move the cursor to another side of the
triangle, and then press
¯
. The perpendicular bisector of
that segment is drawn.
Find the intersection point of the perpendicular bisectors.
1. Press
V
2. Select
DRAW
to display the menu bar.
, and then select
Intersection
.
3. Use the arrow keys to move the cursor to one perpendicular
bisector, and then press
TI-83 Plus GeoMaster™ Application Page 8
¯
.
4. Use the arrow keys to move the cursor to the other
perpendicular bisector, and then press
¯
. The
intersection point is drawn.
Draw a circle that circumscribes the triangle.
-
The center point is the intersection of the perpendicular
bisectors.
-
The circle intersects each vertex of the triangle.
1. Press
2. Select
TI-83 Plus GeoMaster™ Application Page 9
V
DRAW
to display the menu bar.
, and then select
Circle
.
3. Use the arrow keys to move the cursor to the intersection
Note
When more than one object is near the cursor location, a dialog
box displays a list of objects that you can choose. Each object is
named according its object type. A number follows the name,
indicating the order in which that object was created. For
example, Point 11 is the name of the 11thpoint created in this
drawing, which is the intersection point of the perpendicular
bisectors. Move the cursor to the correct object name and press
¯
to select it.
There are 2 objects at this cursor
location. Point 11 is the intersection
point of the perpendicular bisec t ors.
point of the perpendicular bisectors and press
4. Use the arrow keys to move the cursor to one of the vertex
points of the triangle. The circle enlarges as the cursor
moves. Press
¯
at the vertex point to complete the
circle.
¯
.
TI-83 Plus GeoMaster™ Application Page 10
5. Use the arrow keys to move the cursor away from the vertex
Note
Select a vertex point other than the one that you used to create
the circle.
point. The circle is completed.
Move a vertex point on the triangle. Notice how the circle,
triangle, and the perpendicular bisectors are affected.
1. Press
s
to exit the Circle tool.
2. Use the arrow keys to move the cursor to a vertex point on
the triangle, and then press
TI-83 Plus GeoMaster™ Application Page 11
¯
.
3. Because the triangle, point, and circle are very close to each
other, a dialog box displays that lists the objects you can
select. Press
to highlight the point, and then press
h
¯
.
4. Press
¯
again. An x-shaped cursor is displayed, which
indicates that you can move the object you selected.
5. Use the arrow keys to move the point. The circle and the
perpendicular bisectors change with respect to the change in
the shape of the triangle.
TI-83 Plus GeoMaster™ Application Page 12
Save the drawing, clear the screen, and then open the file you
Tip
If other GeoMaster™ files have been saved previously, a dialog
box lists the names of the GeoMaster files, as well as New
Filename. Press
¯
to select New Filename.
Alpha-lock icon
Press
e
to turn the
alpha-lock off so that you
can enter numbers.
created.
1. Press
V
2. Select
FILE
to display the menu bar.
(press
), and then select
R
Filename prompt is displayed. The top right corner displays
the alpha-lock icon.
.
3. Enter a file name, and then press
¯
saved as an application variable (AppVar) with the name you
entered.
4. Press
V
to display the menu bar.
Save File
. The New
. The drawing is
5. Select
TI-83 Plus GeoMaster™ Application Page 13
, and then select
FILE
Clear All
to clear the screen.
6. Press
Tip
If you have other GeoMaster™ files saved on your calculator, all
of the files are displayed in the dialog box. Move the cursor to the
file name, and then press
¯
to open the file.
V
to display the menu bar.
7. Select
, and then select
FILE
Open File
the name of the file you just saved.
8. Press
¯
to open the file.
Quit the application.
1. Press
2. Select
V
FILE
to display the menu bar.
, and then select
Quit
. The
screen is displayed.
3. Select
Quit GeoMastr
.
. A dialog box displays
GeoMaster RUNNING
TI-83 Plus GeoMaster™ Application Page 14
Now that you have completed the Getting Started example, you
can read further to learn more about other GeoMaster™ features.
For example, you can:
Draw different types of objects
•
Display information about objects
•
Transform objects
•
Store and clear data
•
.
.
.
.
TI-83 Plus GeoMaster™ Application Page 15
Starting and Quitting the GeoMaster
Tip
After you press
n
, you can press
e
G to move to the first
application name that begins with a G.
Note
If the GeoMaster™ application is already running, the GeoMaster
RUNNING screen is displayed instead of the information screen.
From this screen, select
Continue
to display the main GeoMaster
screen.
Application
Starting the Application
1. Press
n
to display the list of applications on your
calculator.
2. Select
GeoMastr
. The information screen is displayed.
3. Press any key to display the main screen.
TI-83 Plus GeoMaster™ Application Page 16
Quitting the Application
Note
Pressing
\
returns the cursor to the home screen, but
does not quit the application. You can press
V
to return to
the main screen.
1. Select
FILE
(press
V
necessary, and then press R), and then select
GeoMaster RUNNING
2. Select
Quit GeoMastr
screen is displayed.
to display the menu bar, if
.
Quit
. The
TI-83 Plus GeoMaster™ Application Page 17
GeoMaster Settings
Setting
Change
Xmin
/
47
Xmax
47
Ymin/31
Ymax
31
Grid
Turned off
Axes
Turned off
Coordinates
Turned on
Graphing mode
Functional
Plots
Turned off
Equations
Turned off
Horizontal or G-T display
Full
When you run the GeoMaster™ application, several changes are
made to your calculator settings. The following table describes
these changes:
TI-83 Plus GeoMaster™ Application Page 18
You can change these settings at any time, with the following
exceptions:
Polar and sequential graphing modes are not supported.
•
Horizontal and graph-table display modes are not supported.
•
The GeoMaster™ application has its own mode settings screen.
This screen does not contain settings that the application does
not support. You cannot access the calculator's mode settings
screen while the GeoMaster application is running.
When you quit the application, the GeoMaster application turns
coordinates and axes on and turns the grid off. The window
settings remain unchanged, that is, the last changes you made
to the window settings are still in effect. If you have not changed
the window settings, the default GeoMaster window settings are
still in effect: Xmin = /47, Xmax = 47, Ymin = /31, Ymax = 31.
TI-83 Plus GeoMaster™ Application Page 19
Window and Zoom Settings
Largest window
Smallest window
Xmin
d 1
32000
Xmax c32000
Ymin
d 1
32000
Ymax c32000
The following cannot be set at the
same time:
0 > Xmin > 10.01
.01 > Xmax > 0
0 > Ymin > 10.01
.01 > Ymax > 0
ZoomCenter (Xmin = /47, Xmax = 47, Ymin = /31, Ymax = 31) is
selected when you start the GeoMaster™ application. You can
change the window settings; however, the window settings must
be within valid ranges. Otherwise, ZoomCenter is automatically
selected. Valid ranges are:
TI-83 Plus GeoMaster™ Application Page 20
Using GeoMaster Menus
Tip
Menu items are numbered beginning with 1-9 and continuing with A-Z.
After you select the menu, you can press the number (or
e
and
the letter) that corresponds to the menu item to select it.
Press a
graphing key
to select a
menu.
Coordinates
at the
cursor
location
Cursor
R S T U V
R S T U V
Normal functions
of the graphing
keys are
available
Tool currently
selected
Indicates
that no tool
is selected
The GeoMaster™ menu bar is displayed across the bottom of
the screen when you start the application. After you select a
menu, the menu bar is no longer visible, and the normal
functions of the graphing keys are available.
To select a menu, press the graphing key directly below the
•
menu.
To select a menu item, highlight the name, and then press
•
¯
.
To redisplay the GeoMaster menu bar, press
•
TI-83 Plus GeoMaster™ Application Page 21
V
.
Creating, Saving, and Opening Files
Note
•
To select the FILE menu, press R.
•
If the GeoMaster™ menu bar is not displayed, press
V
.
•
Press
s
to exit the menu item that is currently selected.
Note
If the current screen contains objects, the application prompts
you to save them to a file.
Note
If the current screen contains objects, the application prompts
you to save them to a file.
Use the
menu to create, save, open, and append files, as
FILE
well as to clear the screen and exit the application.
Creating a New File
To create a new file, select
New File
from the
Opening an Existing File
1. Select
Open File
from the
menu. A list of file names is
FILE
displayed.
2. Select a file name from the list, and then press
file is displayed.
menu.
FILE
¯
. The
TI-83 Plus GeoMaster™ Application Page 22
Saving a File
Tip
Alpha-lock is turned on when you select New Filename. To turn it
off so that you can enter numbers, press
e
.
Note
If the file you want to append causes the current file to contain
more than 200 objects, an insufficient memory message is
displayed, and the selected file is not appended to the current file.
1. Select
Save File
from the
menu. A list of file names is
FILE
displayed.
2. Select
New Filename
, and then type the name for the new
file.
—or—
Move the cursor to a file name in the list to overwrite an
existing file.
3. Press
¯
. The file is saved.
Appending a File to the Current File
1. Select
Append File
from the
menu. A list of existing files
FILE
is displayed.
2. Select a file from the list. The geometric objects of the
selected file are appended to the current file.
TI-83 Plus GeoMaster™ Application Page 23
Clearing the Screen
Warning
The GeoMaster™ application does not confirm that you want to
delete every object on the screen before performing the task.
Select
Clear All
from the
menu. Every object on the screen is
FILE
deleted.
TI-83 Plus GeoMaster™ Application Page 24
Drawing Objects
Note
•
To select the DRAW menu, press
S
.
•
If the GeoMaster™ menu bar is not displayed, press
V
.
•
Press
s
to exit the menu item that is currently selected.
Use the
DRAW
menu to draw objects such as points, lines,
segments, rays, vectors, circles, arcs, and polygons.
Drawing a Point
Point
1. Select
from the
DRAW
2. Use the arrow keys to move the cursor where you want draw
the point.
3. Press
4. Press
¯
¯
.
again or move the cursor away from the point.
Drawing a Line
menu.
1. Select
Line
from the
DRAW
menu.
2. Use the arrow keys to move the cursor where you want to
create the first point for the line.
TI-83 Plus GeoMaster™ Application Page 25
3. Press
¯
.
4. Use the arrow keys to move the cursor away from the
beginning point and draw the line.
5. Press
¯
, and then move the cursor away from the line.
Drawing a Segment
1. Select
Segment
from the
DRAW
menu.
2. Use the arrow keys to move the cursor to the beginning point
for the segment.
3. Press
¯
.
4. Use the arrow keys to move the cursor to the ending point
for the segment.
5. Press
¯
, and then move the cursor away from the
segment.
TI-83 Plus GeoMaster™ Application Page 26
Drawing a Circle
1. Select
Circle
from the
DRAW
menu.
2. Use the arrow keys to move the cursor to the center point of
the circle.
3. Press
¯
.
4. Press any arrow key to expand the circle.
5. When the circle is the size you want, press
¯
, and then
move the cursor away from the circle.
Drawing a Triangle
1. Select
Triangle
from the
DRAW
menu.
2. Use the arrow keys to move the cursor to the beginning point
of the triangle, and then press
¯
.
3. Move the cursor to draw the first segment of the triangle.
4. Press
TI-83 Plus GeoMaster™ Application Page 27
¯
to place the second point of the triangle.
5. Move the cursor to draw the second segment, and then
press
¯
to place the third point of the triangle.
6. Press
¯
or move the cursor to draw the final segment.
Drawing a Polygon
1. Select
Polygon
from the
DRAW
menu.
2. Use the arrow keys to move the cursor to the beginning point
for the polygon.
3. Press
¯
.
4. Move the cursor to draw the first segment of the polygon.
5. Press
¯
6. Continue to draw segments, pressing
to place the second point.
¯
after each
segment is complete to place a point.
7. Press
¯
to complete the polygon.
TI-83 Plus GeoMaster™ Application Page 28
Drawing a Regular Polygon
Note
The default number of sides is 6, but can be changed in the next
step.
1. Select
Reg Polygon
from the
DRAW
menu.
2. Use the arrow keys to move the cursor to where you want to
place the center of the polygon.
3. Press
¯
.
4. Move the cursor until the object is the size you want.
5. Press to decrease the number of sides (to a minimum of
3) or press ¥to increase the number of sides (to a
maximum of 12).
6. Press
¯
, and then move the cursor away from the
polygon.
Drawing a Ray
1. Select
Ray
from the
DRAW
menu.
2. Place the cursor at the endpoint for the ray.
TI-83 Plus GeoMaster™ Application Page 29
3. Press
¯
.
4. Use the arrow keys to move the cursor away from the
endpoint and draw the ray.
5. Press
¯
, and then move the cursor away from the ray.
Drawing a Vector
1. Select
Vector
from the
DRAW
menu.
2. Use the arrow keys to move the cursor to the beginning point
(the tail) of the vector.
3. Press
¯
.
4. Move the cursor away from the beginning point.
5. Use the arrow keys to rotate the vector, if needed.
6. Press
¯
, and then move the cursor away from the vector
to place the head of the vector.
TI-83 Plus GeoMaster™ Application Page 30
Drawing an Arc
1. Select
from the
Arc
DRAW
menu.
2. Place the cursor at the beginning point of the arc.
3. Press
¯
.
4. Move the cursor to the arc’s second point.
5. Press
¯
.
6. Move the cursor to the arc’s third point.
7. Press
¯
, and then move the cursor away from the arc.
TI-83 Plus GeoMaster™ Application Page 31
Drawing a Midpoint
Use the
Midpoint
tool to draw a midpoint on a segment or
between two points.
1. Select
Midpoint
2. Place the cursor on the segment, and then press
from the
DRAW
menu.
¯
to
draw the midpoint.
—or—
Select the first point, place the cursor on the second point,
and then press
¯
to draw the midpoint.
Drawing an Intersection Point
Use the
Intersection
tool to draw an intersection point between
two intersecting objects. You can draw an intersection point for
any combination of the following types of objects: lines,
segments, rays, vectors, circles, and arcs.
1. Select
Intersection
from the
DRAW
2. Place the cursor on the first object, and then press
menu.
¯
to
select it.
TI-83 Plus GeoMaster™ Application Page 32
3. Place the cursor on the next object, and then press
select it. The intersection point(s) is drawn.
Drawing a Point on an Object
¯
to
Use the
Point on Object
tool to draw a point on any existing
object.
1. Select
Point on Object
from the
2. Place the cursor on an object.
3. Press
¯
to draw the point.
Detaching a Point
Use the
the
Detach Point
Point on Object
1. Select
Detach Point
tool to detach a point that was created with
tool.
from the
DRAW
2. Place the cursor on the point.
3. Press
¯
. The point is detached, but is not deleted.
DRAW
menu.
menu.
TI-83 Plus GeoMaster™ Application Page 33
Drawing a Perpendicular Line
Use the
Perpendicular
tool to draw a line that is perpendicular to
a reference object. The reference object can be one of the
following: line segment, line, polygon side, triangle side, ray, or
vector.
1. Select
Perpendicular
from the
DRAW
menu.
2. Move the cursor to the reference object, and then press
¯
to select it. The perpendicular line is drawn.
3. Use the arrow keys to move the perpendicular line, if
necessary.
4. Press
¯
, and then move the cursor away from the line.
TI-83 Plus GeoMaster™ Application Page 34
Drawing a Parallel Line
Use the
Parallel
tool to draw a line that is parallel to a reference
object. The reference object can be one of the following: line
segment, line, polygon side, triangle side, ray, or vector.
1. Select
Parallel
from the
DRAW
menu.
2. Move the cursor to the reference object, and then press
¯
to select it. The parallel line is drawn on top of the
original line.
3. Use the arrow keys to move the parallel line.
4. Press
¯
, and then move the cursor away from the line.
Drawing a Perpendicular Bisector
Use the
Perp Bisector
tool to draw a perpendicular bisector of a
reference object. The reference object can be one of the
following: line segment, polygon side, triangle side, or vector.
1. Select
Perp Bisector
from the
DRAW
menu.
2. Select the reference object. The perpendicular bisector is
drawn for that object.
TI-83 Plus GeoMaster™ Application Page 35
Drawing an Angle Bisector
Tip
Neither intersecting lines nor intersecting line segments have
points to select that make up an angle.
To draw an angle bisector of intersecting lines or segments:
-
Use the Point on Object tool (DRAW menu) to place
exterior points on the lines for the angle, if necessary.
-
Use the Intersection tool (DRAW menu) to place a point
where the lines intersect.
1. Select
Angle Bisector
from the
DRAW
2. Select the three points that make up the angle. (The points
must be in this order: point, vertex, point.) The angle bisector
is drawn.
menu.
TI-83 Plus GeoMaster™ Application Page 36
Calculating and Displaying Measurements
Note
•
To select the MEAS menu, press
T
.
•
If the GeoMaster™ menu bar is not displayed, press
V
.
•
Press
s
to exit the menu item that is currently selected.
Use the
menu to find information about objects that you
MEAS
have drawn. You can find the following types of measurements:
slope of a line
•
measurement of an angle
•
equation of a line
•
coordinates of a point
•
distance between two points
•
length of a vector
•
length of a line segment
•
TI-83 Plus GeoMaster™ Application Page 37
Finding Distance and Length
Tip
The GeoMaster™ application denotes a length measurement by
placing a uafter the value (e.g., 36u).
Use the
Distance/Length
tool to find the distance between two
points, length of a line segment or vector, perimeter of a
polygon, circumference of a circle, length of an arc, or radius of a
circle.
1. Select
Distance/Length
from the
MEAS
2. Select the endpoints (for distance). The distance is
displayed.
—or—
Select the object (for length). The length is displayed.
3. Use the arrow keys to move the measurement value to any
location on the screen, and then press
menu.
¯
.
TI-83 Plus GeoMaster™ Application Page 38
Finding an Area Measurement
Note
The GeoMaster™ application cannot compute correct area
measurements for polygons whose sides cross each other.
Tip
The GeoMaster application denotes an area measurement by
placing a
u
2
after the value (e.g., 1066u2).
Area
measurements f or
either of these
polygons can be
computed
accurately.
The area
measurement for
this polygon cannot
be computed
accurately.
Use the
tool to find the area measurement for any size
Area
polygon, triangle, or circle.
1. Select
Area
from the
MEAS
menu.
2. Move the cursor to the boundary of the object, and press
¯
to select the object. The area measurement is
displayed.
3. Use the arrow keys to move the measurement value to any
location on the screen, and then press
TI-83 Plus GeoMaster™ Application Page 39
¯
.
Finding an Angle Measurement
Tip
The GeoMaster™ application denotes an angle measurement by
placing a
after the value (e.g., 47).
Tip
Neither intersecting lines nor intersecting line segments have
points to select that make up an angle.
To create points so that you can calculate angle measurements:
-
Use the Point on Object tool (DRAW menu) to place
exterior points on the lines for the angle, if ncecssary.
-
Use the Intersection tool (DRAW menu) to place a point
where the lines intersect.
Use the
Angle
tool to find the angle measurement of an angle
created by selecting any three points. The angle measured is the
angle that is inside the three points.
1. Select
Angle
from the
MEAS
menu.
2. Select the three points that make up the angle. (The points
must be selected in this order: point, vertex, point.) The
angle measurement is displayed.
3. Use the arrow keys to move the measurement value to any
location on the screen, and then press
¯
.
TI-83 Plus GeoMaster™ Application Page 40
Performing Calculations
Tip
•
The Calculate tool only adds or subtracts like values. For
example, you cannot add a distance measurement and an area
measurement.
•
You cannot use a calculated value in a new calculation.
•
The Calculate tool does not add or subtract slopes, vector
sums, equations, or coordinates.
•
The GeoMaster™ application denotes units of measure with
the following notation:
for degrees
u for length
u2for area
After you find a measurement using the
Angle
tools, you can add or subtract those values.
1. Select
Calculate
from the
MEAS
menu.
2. Select the measurement value.
3. To add the measurements, press ¥.
—or—
Distance/Length, Area
, or
To subtract the measurements press .
TI-83 Plus GeoMaster™ Application Page 41
4. Select the next measurement.
Tip
You can add / subtract a maximum of five measurements by
repeating steps 4 and 5.
Tip
If you select 6 measurements, you do not have to press
¡
.
The sum is automatically calculated.
5. Press
¡
to calculate the sum.
6. Use the arrow keys to move the calculated value to any
location on the screen, and then press
Finding the Slope of a Line or Segment
Use the
Slope
tool to find the slope of a line or segment
(including a side of a polygon or triangle), vector, or ray.
1. Select
Slope
from the
MEAS
menu.
2. Select the object. The slope of the object is displayed.
3. Use the arrow keys to move the measurement value to any
location on the screen, and then press
¯
¯
.
.
TI-83 Plus GeoMaster™ Application Page 42
Drawing a Vector Sum
1. Select
Vector Sum
from the
MEAS
menu.
2. Select the first vector.
3. Select the second vector. A vector that is the sum of the
selected vectors is drawn.
4. Use the arrow keys to move the measurement value to any
location on the screen, and then press
¯
.
Finding Equations of Lines or Circles and Coordinates of Points
1. Select
Eqns/Coords
from the
MEAS
menu.
2. Select the object. The equation (for a line or circle) or the
coordinate pair (for a point) is displayed.
3. Use the arrow keys to move the measurement value to any
location on the screen, press
¯
, and then move the
cursor away from the value.
TI-83 Plus GeoMaster™ Application Page 43
Note
Because the circle and the point intersect, a dialog box lists
Circle 0 and Point on Object 3. Highlight Point on Object 3, and
then press
¯
to select it.
Example–
Draw a circle, and then find the equation for that
circle. Find coordinate pairs for points on the circle.
1. Draw a circle
.
2. Draw a point on the circle using the
3. Select
Eqns/Coords
from the
MEAS
menu.
4. Select the circle. The equation for the circle is displayed.
5. Use the arrow keys to move the equation so that you can
read it easily, press
¯
, and then move the cursor away
from the equation.
6. Select the point that you just created with the
tool. The coordinates for that point are displayed.
7. Use the arrow keys to move the coordinates so that you can
read them easily, press
¯
, and then move the cursor
away from the coordinates.
Point on Object
Point on Object
tool.
TI-83 Plus GeoMaster™ Application Page 44
8. Press
s
to exit the
Eqns/Coords
tool.
9. Move the cursor to the point that was created with the
on Object
10. Press
tool, and then press
¯
again, and then use the arrow keys to move the
¯
.
Point
object to a different location on the circle.
11. Press
¯
to place the point in the new location. The
coordinate pair has been updated with the new coordinates
of the point.
TI-83 Plus GeoMaster™ Application Page 45
Transforming Objects
Tip
•
To select the TRFM menu, press
U
.
•
If the GeoMaster™ menu bar is not displayed, press
V
.
•
Press
s
to exit the menu item that is currently selected.
Use the
menu to translate, reflect, rotate, or dilate an
TRFM
object, or to create an object that is symmetrical to an existing
object.
Translating an Object
A translation slides a shape a given length in a given direction. A
vector defines the length and direction for the translation. The
original object is unchanged.
1. Draw an object
2. Draw a vector
.
that provides the length and direction for the
translation.
3. Select
Translation
from the
TRFM
menu.
TI-83 Plus GeoMaster™ Application Page 46
4. Select the object to translate.
Note
Move the cursor to the side of the object to select it. You cannot
select an object by moving the cursor to the interior of the object.
Note
The order of these steps is important. You
must
first select the
object to translate and then select the vector.
5. Select the vector. The object is translated.
Reflecting an Object
A reflection creates an object's mirror image with respect to a
line, segment, ray, or vector. The original object is unchanged.
1. Draw an object
2. Draw a line
.
, segment, ray, or vector about which the object
will be reflected.
TI-83 Plus GeoMaster™ Application Page 47
3. Select
Note
The order of these steps is important. You
must
first select the
object to reflect, and then select the object around which to
reflect it.
Reflection
from the
TRFM
menu.
4. Select the object to reflect.
5. Select the line, line segment, ray, or vector around which the
object will be reflected. The object is reflected.
Rotating an Object
1. Draw an object.
2. Draw a point
3. Select
Rotation
around which the object will be rotated.
from the
TRFM
menu.
4. Select the object to rotate.
5. Select the point around which the object will be rotated.
TI-83 Plus GeoMaster™ Application Page 48
6. Enter the angle of rotation. The object is rotated.
Note
•
When you type the first number of the angle of rotation, the
angle prompt is displayed.
•
The order of these steps is important. You
must
first select the
object to rotate, and then select the point around which to
rotate it.
Tip
You can rotate an object in small increments without entering an
angle of rotation. To do this:
•
Press ¥to rotate the object 5counter-clockwise.
•
Press to rotate the object 5clockwise.
You can also rotate an object around its center (or default point,
if the object does not have a center, such as a ray) instead of
around an external fixed point. To do this, skip steps 1 and 5
above.
The triangle was rotated 90 degrees around the point.
TI-83 Plus GeoMaster™ Application Page 49
Dilating an Object
Tip
Dilation is usually defined as a transformation determined by a
center point C and a scale factor k>0. This application also
allows k<0.
Tip
If you want to dilate an object with reference to its geometric
center (or a default point, if the object does not have a center,
such as a ray), you do not need to draw a point.
You can enlarge or reduce an object using the
Dilation transforms each segment of an object to a parallel line
whose length is a fixed multiple of the length of the original line
segment. An object is dilated with respect to a point. When an
object is dilated, the original object is deleted.
1. Draw an object.
2. Draw a reference point
3. Select
Dilation
from the
.
TRFM
menu.
4. Select the object to dilate.
Dilation
tool.
5. Select the reference point, unless you want to use the
object's geometric center.
TI-83 Plus GeoMaster™ Application Page 50
6. Enter the factor of dilation.
Tip
•
After you enter the first element of the dilation factor, the
prompt is displayed.
•
You can dilate an object in small increments without entering a
factor of dilation:
-
Press ¥to dilate the object by a factor of 1.1 of the
previous dilation.
-
Press to dilate the object by a factor of .9 of the
previous dilation.
•
If you enter a large dilation factor, the dilated object is not
visible in the viewing window.
7. Press
¯
. The object is dilated.
The line segment was dilated with respect to the point by a factor of 1.5.
TI-83 Plus GeoMaster™ Application Page 51
Symmetry
You can use the
Rotate an object 180 degrees about a point.
•
Check to see if an object has rotational symmetry of 180
•
Symmetry
tool to do the following:
degrees.
Create special tessellations (cover the geometric plane
•
without gaps or overlaps by congruent plane figures of one
type or a few types).
Example–
1. Draw an object
2. If needed, draw a point
Rotate an object 180 degrees about a point.
.
about which the object is rotated 180
degrees.
TI-83 Plus GeoMaster™ Application Page 52
3. Select the object, and then select the center point of rotation.
Tip
The center point of rotation can be a point you have drawn, the
center of the object, or a point on the object.
The new object is drawn.
Example–
Check to see if a pentagon and an octagon have
rotational symmetry of 180 degrees.
1. Draw a pentagon using the
2. Draw an octagon using the
Reg Polygon
Reg Polygon
tool.
tool.
3. Select
TI-83 Plus GeoMaster™ Application Page 53
Symmetry
from the
TRFM
menu.
4. Select the pentagon, and then select the pentagon's center
The octagon has
rotational symmetry of
180 degrees, that is, the
second object matches
the first object perfectly.
The pentagon does
not have rotational
symmetry of 180
degrees.
point. The second pentagon, rotated 180 degrees, is drawn.
5. Select the octagon, and then select the octagon's center
point. The second octagon, rotated 180 degrees, is drawn.
Example–
Tessellate the plane using the
Symmetry
tool.
1. Draw a hexagon in the upper left corner of the screen using
the Reg Polygon
tool.
2. Select
TI-83 Plus GeoMaster™ Application Page 54
Symmetry
from the
TRFM
menu.
3. Move the cursor to the hexagon, and then press
This is a semi-pure
tessallation because the
plane is tessellated using 2
objects, a regular hexagon
and an equilateral triangle.
¯
to
select it.
4. Move the cursor to the point on the lower right side of the
hexagon, and then press
¯
to select it. A rotated
hexagon is drawn about the point that you selected.
5. Select the rotated hexagon, and then select a point on that
hexagon about which to draw the next rotated hexagon.
6. Press
¯
to draw a third rotated hexagon.
7. Continue creating hexagons to tessellate the screen.
TI-83 Plus GeoMaster™ Application Page 55
Comparing Objects
Tip
•
To select the MISC menu, press
V
.
•
If the GeoMaster™ menu bar is not displayed, press
V
.
•
Press
s
to exit the menu item that is currently selected.
Use the
Perpendicular, Parallel
menu to compare two objects.
The
•
Perpendicular
tool determines if two lines, segments,
vectors, or rays are perpendicular.
The
•
Parallel
tool determines if two lines, segments, vectors, or
rays are parallel.
The
•
Collinear
tool determines if three points are collinear.
The application displays true or false for each comparison. The
text disappears when you press
away from its current position.
Determining if Two Lines Are Perpendicular
, and
¯
Collinear
tools on the
and move the cursor
MISC
1. Draw two or more objects
2. Select
TI-83 Plus GeoMaster™ Application Page 56
Perpendicular?
.
from the
MISC
menu.
3. Select the two straight lines. True is displayed for
Tip
You cannot compare an object to itself, so you cannot select an
object more than one time.
perpendicular lines; false is displayed for non-perpendicular
lines.
Determining if Two Lines Are Parallel?
1. Draw two or more objects
2. Select
TI-83 Plus GeoMaster™ Application Page 57
Parallel?
from the
.
MISC
menu.
3. Select the two lines. True is displayed for parallel lines; false
Tip
You cannot compare an object to itself, so you cannot select an
object more than one time.
Note
Press
e
immediately after you create each point. This
allows you to enter a label for each point as you create it. Enter
the label, and then proceed.
is displayed for non-parallel lines.
Example–
Investigate the following theorem: If two parallel lines
are cut by transversal (a line that intersects a system of lines),
then alternate exterior angles have equal measure.
1. Draw two parallel lines using the
labeling the points
A, B, C
, and Das you create the lines.
Line
tool on the
DRAW
TI-83 Plus GeoMaster™ Application Page 58
menu,
2. Draw a third line that intersects both of the parallel lines,
Note
A dialog box lists all of the objects at the intersection point.
Highlight the point, and then press
¯
to select it.
labeling the points
and Fas you draw the line.
E
3. Use the
Intersection
tool to create the points of intersection for
the lines.
4. Select the
tool from the
Label
MISC
menu.
5. Move the cursor to the first intersection point, and then press
¯
to select it.
6. Enter the label Gfor the point, and then press
7. Select the second intersection point; enter the label
and then press
TI-83 Plus GeoMaster™ Application Page 59
¯
.
¯
.
H
for it;
8. Press
Note
A dialog box lists all of the objects at the intersection point.
Highlight the point label, and then press
¯
to select it.
Notice that the alternate
exterior angles have
equal measure.
s
to exit the
Label
tool.
Your screen should look similar to this:
9. Find the angle measurements for
EHD and oFGB.
o
10. Press
s
to exit the
Angle
tool.
11. Move the cursor to a point on one of the lines, and then
press
12. Press
TI-83 Plus GeoMaster™ Application Page 60
¯
¯
.
again, and use the arrow keys to rotate the line.
13. Select the
Before you
moved the line,
the
measurements of
the angles were
equal.
As you move the line,
the angle
measurements are
updated – and are no
longer equal!
Parallel?
tool from the
MISC
menu.
14. Move the cursor to the first line, and then press
¯
select it.
15. Move the cursor to the second line, and then press
¯
select it. False is displayed, because the lines are no longer
parallel. Notice then, if the measurements of the alternate
exterior angles are not equal, the lines are no longer parallel.
to
to
TI-83 Plus GeoMaster™ Application Page 61
Determining if Three Points Are Collinear?
1. Draw an object
2. Select
Collinear? f
or draw a point or points on an object.
rom the
MISC
menu.
3. Select the three points. True is displayed for collinear points;
false is displayed for non-collinear points.
TI-83 Plus GeoMaster™ Application Page 62
Storing and Clearing Data
Tip
•
To select the MISC menu, press
V
.
•
If the GeoMaster™ menu bar is not displayed, press
V
.
•
Press
s
to exit the menu item that is currently selected.
Note
•
You may not be able to store the maximum number of
elements in each of the six lists if your calculator does not have
a sufficient amount of RAM.
•
Each coordinate pair is treated as two separate data elements.
Therefore, you can only store three coordinate pairs at one
time.
Use the
Select Data
and
Clear Data
tools on the
work with data gathered using the tools on the
You can store up to six different values or measurements to lists
at one time. Each list can contain up to 999 elements. The
GeoMaster application automatically creates lists named
L2GEO, L3GEO, L4GEO, L5GEO
, and
L6GEO
measurements you select on the screen are stored in these lists
with the first element selected stored to
element stored to
L2GEO
, etc.
MISC
MEAS
. The numbers or
L1GEO
, the second
menu to
menu.
L1GEO
,
TI-83 Plus GeoMaster™ Application Page 63
Selecting and Storing Data
Note
The cursor must be positioned at the far left end of the data in
order to select the data. When the data is selected, it is
highlighted.
After you select the data, you can store the data to lists that are
automatically created by the GeoMaster™ application
(
L1GEO
–
L6GEO
). The data you select is appended to the end of
the lists. The application saves the lists you created and their
data even after you exit the application.
When you select
L1GEO
–
L6GEO
are cleared, preparing them to have new data
Select Data
, all of the data elements in the lists
elements stored in them. You can store subsequent values to the
lists by pressing
. For example, you can store the angle
¡
measurements of a triangle, and then move a vertex of the
triangle and store the new angle measurements. (See the
example
1. Draw an object
below.)
or objects and find measurements or
coordinate pairs for the objects.
2. Select
Select Data
from the
MISC
menu.
3. Select the numbers or measurements on the screen that you
want to store.
TI-83 Plus GeoMaster™ Application Page 64
4. Press
Note
•
If you select enough data for all six lists, the data is stored
automatically after you select the last data element. You do not
need to press
¡
.
•
You can only store three coordinate pairs at one time because
the X and Y coordinates are stored in separate lists. (For
example, X1 is stored to L1GEO, Y1 is stored to L2GEO, etc.)
also select
¡
to store the elements you selected. (You can
Store Data
from the
MISC
menu.)
Example–
Investigate the following theorem: The sum of the
measure of the angles of a triangle is 180 degrees.
The first series of steps creates the drawing, finds the
measurements of the angles, and stores the measurements
to
L1GEO –L3GEO
1. Draw a triangle
TI-83 Plus GeoMaster™ Application Page 65
:
.
2. Find the measurement of each angle of the triangle.
Note
Place the cursor on the leftmost side of the angle measurement
to select it. When the measurement is selected, it is highlighted.
3. Calculate the sum of the angles.
4. Select
Select Data
from the
MISC
menu.
5. Move the cursor to the first angle measurement, and then
press
¯
to select it.
6. Move the cursor to the second angle measurement, and then
press
TI-83 Plus GeoMaster™ Application Page 66
¯
to select it.
7. Move the cursor to the last angle measurement, and then
Note
Move the cursor to the vertex point, and then press
¯
. A
dialog box lists all the objects at this location. Highlight the point
label, and then press
¯
to select it.
press
¯
to select it.
8. Press
L3GEO
.
¡
to store the angle measurements to
9. Select a vertex point on the triangle.
10. Press
¯
again, and then use the arrow keys to move the
vertex point. The angle measurements are updated as you
move the vertex point.
11. Press
¡
to store the new angle measurements.
12. Move the vertex point again, and then press
the new angle measurements.
¡
L1GEO
to store
–
TI-83 Plus GeoMaster™ Application Page 67
13. Press
Notice that the angle
measurements changed
as you moved the vertex
point, but the sum of the
angles remains the same.
¯
to place the vertex in the new location.
The next series of steps sets up the investigation of the
theorem using the list editor. List L1 will contain the sum of
the angle measurements of the triangle.
1. Press
2. Press
3. Press
4. Press
5. Press
TI-83 Plus GeoMaster™ Application Page 68
, and then select
g
\ G \
\
\
¯
, and then select
, and then select
to complete the list editor setup.
SetUpEditor
.
, and then select
L2GEO
L3GEO
L1GEO
.
.
.
The next series of steps sets up the sum of the angle
You can see that the sum
of the angles of the
triangle, no matter what its
shape, is 180 degrees.
This symbol
indicates that L1 is
a locked list. It will
be dynamically
updated if you
change any value
in L1GEO –
L3GEO.
measurements in L1, and displays the data in the list editor.
1. Press
2. Press
3. Press
4. Press
5. Press
6. Press
TI-83 Plus GeoMaster™ Application Page 69
e
¥ \
¥ \
¡ \ G
¯
g
["]
\
, and then select
, and then select
, and then select
.
to complete the setup.
and then select
Edit
.
L2GEO
L3GEO
L1GEO
.
.
.
Clearing Stored Data
Tip
You can clear list elements instead of deleting the entire list. To do
this:
1. Press
\
to exit the application.
2. Press
g
.
3. From the Edit menu, select
ClrList
.
4. Press
\
to display the lists on your calculator.
5. Select the list to clear and press
¯
.
To quickly clear all data from all of the lists created by the
GeoMaster application, select
Lists
L1GEO
default settings, press
¯
.
–
L6GEO
are deleted. To return the list editor to the
g
Clear Data
, select
from the
SetUpEditor
menu.
MISC
, and then press
TI-83 Plus GeoMaster™ Application Page 70
Moving Objects
Tip
Everything on the screen that is associated with the object is
moved with it, including transformations and labels.
Moving Individual Objects
1. Draw an object
2. Press
s
.
to exit the current tool.
3. Move the cursor to the object, and then press
object changes to dashed lines.
4. Press
¯
again to activate move mode. An x-shaped
cursor is displayed.
5. Use the arrow keys to move the object.
6. Press
¯
to place the object in its new location. The
normal cursor returns.
7. Move the cursor to an empty area on the screen, and then
press
¯
. The object’s lines change back to solid lines,
indicating that the object is deselected.
¯
. The
TI-83 Plus GeoMaster™ Application Page 71
Moving Multiple Objects
Tip
Everything on the screen that is associated with the objects is
moved with it, including transformations and labels.
1. Draw two or more objects
2. Press
s
to exit the current tool.
.
3. Move the cursor to the first object, and then press
The object changes to dashed lines.
4. Move the cursor to the second object, and then press
¯
. The object changes to dashed lines.
5. Select additional objects by moving the cursor to each object
and pressing
\ ¯
.
6. With the cursor on a selected object, press
activate the move mode. An x-shaped cursor is displayed.
7. Use the arrow keys to move the group of objects.
¯
¯
.
\
again to
8. Press
¯
to place the objects in their new location. The
normal cursor returns.
TI-83 Plus GeoMaster™ Application Page 72
9. Move the cursor to an empty area on the screen, and then
press
¯
. The objects’ lines change to solid lines,
indicating that the objects are deselected.
GeoMaster Utilities
The
menu contains several tools that make working with the
MISC
GeoMaster™ application easier and more efficient.
Pointer
•
Label
•
Hide/Show
•
Equ/Plot Off
•
exits the current tool and displays the normal cursor.
lets you add a label to any object on the screen.
lets you hide objects and show hidden objects.
turns off both the equations in the Y= editor and
the stat plots.
Trails On/Off
•
turns the trails feature on or off.
Displaying the Normal Cursor
To display the normal cursor, select
Pointer
from the
MISC
menu.
TI-83 Plus GeoMaster™ Application Page 73
Creating Labels
Tip
•
A label can contain up to eight characters.
•
Alpha-lock is automatically turned on after you select the
object you want to label.
•
Press
e
to turn off the alpha-lock so that you can type
numbers.
1. Select
Label
from the
MISC
menu.
2. Select the object you want to label.
3. Enter the label.
4. Press
¯
.
Hiding Objects
1. Select
Hide/Show
from the
2. Select the object(s) to hide or show.
3. Press
s
. The object is hidden.
MISC
menu.
TI-83 Plus GeoMaster™ Application Page 74
Showing Hidden Objects
1. Select
Hide/Show
from the
menu. Any hidden objects
MISC
are displayed with dashed lines.
2. Move the cursor to an object you want to show, and then
press
¯
. The object is displayed with solid lines.
Equ/Plot Off
If you have turned on equations in the Y= editor or have turned
stat plots on, you can turn them off again without exiting the
GeoMaster™ application by selecting
Equ/Plot Off
from the
MISC
menu. By default, equations and stat plots are turned off when
you start the application.
Turning Trails On and Of
To turn trails on or off, select
Trails On/Off
from the
MISC
menu.
Trails are either turned on or off, depending on the previous
Trails On/Off selection. By default, trails are turned off when you
start the application.
TI-83 Plus GeoMaster™ Application Page 75
Quick Reference Guide
Navigating
To move the cursor around the GeoMaster™ screen, use the
•
arrow keys.
To display the menus, press
•
To highlight a tool in a menu, press `and h.
•
To select a tool from a menu quickly, press the number or
•
e
To cancel the current object being drawn, press
•
To exit the current tool and display the normal cursor, press
•
s
and the letter that corresponds to the tool.
.
V
.
s
Storing Data
•
Press
the
Select Data
¡
to store data after previously selecting data with
tool on the
MISC
menu.
.
TI-83 Plus GeoMaster™ Application Page 76
Selecting an Individual or Multiple Objects
To select an individual object, place the cursor on the object, and
then press
¯
.
To select multiple objects do one of the following:
1. With the cursor in an empty area, press
\ ¯
multiple object selection.
2. Move the cursor to each object, and then press
3. To disable multiple object selection, press
s
-or-
1. Press
2. Press
¯
\ ¯
3. To disable multiple object selection, press
to select the first object.
to select subsequent objects.
s
to enable
¯
.
.
.
TI-83 Plus GeoMaster™ Application Page 77
Deselecting Objects
To deselect multiple objects at the same time, place the
•
cursor in an empty area, and then press
To deselect an individual object, place the cursor on an
•
object, and then press
\ ¯
.
¯
.
Moving Objects
1. With the cursor on an object, press
¯ ¯
.
2. Use the arrow keys to move the object.
3. Press
then press
¯
, move the cursor away from the object, and
¯
again to place the object in the new
location.
Entering Coordinates for Points
You can enter the exact coordinates to draw points instead of
using the arrow keys to move the cursor to those coordinates.
Coordinates can have up to two decimal places.
1. Select a drawing tool, and then press
¯
to draw the first
point.
TI-83 Plus GeoMaster™ Application Page 78
2. Use the number keys to enter the X coordinate of the first
Note
If you enter coordinates with 2-decimal accuracy, the cursor
automatically moves from the X-coordinate to the Y-coordinate
after you enter the last number for the X-coordinate.
CAUTION: If you press
¯
after you enter the X-coordinate
with 2-decimal accuracy, you cannot enter the Y-coordinate.
Tip
•
Press
e
to type an individual alphabetical character.
•
Press
\
to turn on the alpha mode so that you can
type several alphabetical characters in a row.
•
Press
e
to turn off the alpha mode.
point, and then press
¯
.
3. Use the number pad on the calculator to enter the
Y-coordinate of the first point, and then press
point moves to the coordinates you entered.
Entering a Label for a Point
¯
. The
1. Immediately after you create a point, press
e
plus the
letter to enter a character.
2. Press
TI-83 Plus GeoMaster™ Application Page 79
¯
or an arrow key to complete the label.
Deleting Objects
1. With the cursor on an object, press
2. Press
to delete the object and all its dependent objects
^
¯
.
(measurements, constructions, or objects drawn using that
object or its points).
TI-83 Plus GeoMaster™ Application Page 80
Installation Error Messages
Low Battery
Do not attempt to download a Flash application if the low-battery
message appears on the TI
indication is shown on the initial screen. If you receive this error
during an installation, change the batteries before trying again.
Archive Full
This error occurs when the TI83 Plus does not have sufficient
memory for the application. In order to make room for another
application, you must delete an application and/or archived
variables from the TI83 Plus. Before you delete an application
from the TI83 Plus, you can save it on your computer using
the TIGRAPH LINK™ software for the TI83 Plus. You can
reload it to the TI83 Plus later using the TIGRAPH LINK
software.
83 Plus home screen. Low battery
TI-83 Plus GeoMaster™ Application Page 81
Link Transmission Error
This error indicates that the TIGRAPH LINK™ software is
unable to communicate with the TI83 Plus. The problem is
usually associated with the TIGRAPH LINK cable and its
connection to the TI83 Plus and/or to the computer.
Make sure the cable is firmly inserted in the calculator I/O
•
port and the computer.
Verify that the correct cable type is selected in the
•
TIGRAPH LINK link settings.
Verify that the correct communications port (Com Port) is
•
selected in the TIGRAPH LINK link settings.
If this does not correct the problem, try a different
TIGRAPH LINK cable and reboot your computer. If you continue
to get this error, please contact TICares
Customer Support for
Ë
assistance.
TI-83 Plus GeoMaster™ Application Page 82
Error in Xmit
This problem is usually associated with the unit-to-unit cable and
its connection between the TI83 Plus calculators. Make sure the
cable is firmly inserted in the I/O port of each calculator.
If you continue to get this error, please contact TICares
™
Customer Support.
Invalid Signature or Certificate
Either this calculator does not have a certificate to run the
application, or electrical interference caused a link to fail. Try to
install the application again. If you continue to receive this error,
contact TICares
Customer Support.
Other Errors
See pages B-6 through B-10 in the TI83 Plus
manual for
information about the specific error or contact TICares
Customer Support.
TI-83 Plus GeoMaster™ Application Page 83
Checking Version Numbers and Free Space
Verify Operating System Version and ID Number
The GeoMaster™ application is compatible with TI83 Plus
operating system 1.13 and higher.
To verify your operating system version number:
1. From the home screen, press
2. Select
ABOUT
.
\ /
.
The operating system version number is displayed below the
product name and has the format x.yy. The ID number appears
on the line below the product number.
TI-83 Plus GeoMaster™ Application Page 84
Verify Flash Application Version
1. Press
2. Select
.
n
GeoMastr
. The information screen is displayed.
The version number appears on the information screen below
the application name.
You can also access the information screen by selecting
from the application's
FILE
menu.
About
Check Amount of Flash Application Free Space
1. From the home screen, press
2.
Select
Mem Mgmt/Del
.
\ /
.
The GeoMaster™ application requires at least 49,152 bytes of
ARC FREE (Flash) to load the application.
For more information about memory and memory management,
refer to the TI83 Plus
manual.
TI-83 Plus GeoMaster™ Application Page 85
Texas Instruments (TI) Support and Service Information
For General Information
E-mail:
Phone:
ti-cares@ti.com
1-800-TI-CARES (1-800-842-2737)
For US, Canada, Mexico, Puerto Rico, and
Virgin Islands only
Home page:
education.ti.com
For Technical Questions
Phone
: 1-972-917-8324
For Product (Hardware) Service
Customers in the US, Canada, Mexico, Puerto Rico, and Virgin
Islands:
Always contact TI Customer Support before
returning a product for service.
All other customers:
Refer to the leaflet enclosed with your
product (hardware) or contact your local TI
retailer/distributor.
TI-83 Plus GeoMaster™ Application Page 86
End-User License Agreement
Calculator Applications
IMPORTANT - Read this agreement (“Agreement”) carefully before installing the software program(s) and/or
calculator application(s). The software program(s) and/or calculator program(s) and any related
documentation (collectively referred to as the Program) are licensed, not sold, by Texas Instruments
Incorporated (TI) and/or any applicable licensors (collectively referred to as Licensor). By installing or
otherwise using the Program, you agree to be bound by the terms of this license. If the Program was
delivered to you on diskette(s) or CD and you do not agree with the terms of this license, return this package
with all its contents to the place of purchase for a full refund of any license fee paid. If the Program was
delivered to you over the Internet and you do not agree with the terms of this license do not install or use the
Program and contact TI for instructions on obtaining a refund of any license fee paid.
Specific details of the license granted depend upon the license fee you paid and are set forth below. For purposes of
this Agreement, a site (“Site”) consists of one entire physical campus of an educational institution accredited by an
association recognized by the U.S. Department of Education or the State Board of Education, or by their equivalents
in other countries. All additional terms of the Agreement apply regardless of the license granted.
SINGLE USER LICENSE
If you paid a license fee for a Single User License, Licensor grants to you a personal, non-exclusive, non-transferable
license to install and use the Program on a single computer and calculator. You may make one copy of the Program
for backup and archival purposes. You agree to reproduce all copyright and proprietary notices shown in the Program
and on the media. Unless otherwise expressly stated in the documentation, you may not duplicate such
documentation.
EDUCATIONAL MULTIPLE USER LICENSE
If you paid a license fee of an Educational Multiple User License, Licensor grants you a non-exclusive, nontransferable license to install and use the Program on the number of computers and calculators specified for the
license fee you paid. You may make one copy of the Program for backup and archival purposes. You agree to
reproduce all copyright and proprietary notices shown in the Program and on the media. Except as expressly stated
herein or in the documentation, you may not duplicate such documentation. In cases where TI supplies the related
documentation electronically you may print the same number of copies of the documentation as the number of
computers/calculators specified for the license fee you paid. All the computers and calculators on which the Program
is used must be located at a single Site. Each member of the institution faculty may also use a copy of the Program
on an additional computer/calculator for the sole purpose of preparing course materials.
EDUCATIONAL SITE LICENSE
If you paid a license fee for an Educational Site License, Licensor grants you a non-exclusive, non-transferable
license to install and use the Program on all institution, teacher, or student owned, leased or rented computers and
calculators located or used at the Site for which the Program is licensed. Teachers and students have the additional
right to use the Program while away from the Site. You may make one copy of the Program for backup and archival
purposes. You agree to reproduce all copyright and proprietary notices shown in the Program and on the media.
Except as expressly stated herein or in the documentation, you may not duplicate such documentation. In cases
TI-83 Plus GeoMaster™ Application Page 87
where TI supplies the related documentation electronically you may print one copy of such documentation for each
computer or calculator on which the Program is installed. Each member of the institution faculty may also use a copy
of the Program on an additional computer/calculator for the sole purpose of preparing course materials. Students
must be instructed to remove the Program from student owned computers and calculators upon the end of their
enrollment in the institution.
Additional Terms:
WARRANTY DISCLAIMER AND DAMAGES EXCLUSIONS AND LIMITATIONS
Licensor does not warrant that the Program will be free from errors or will meet your specific requirements. Any
statements made concerning the utility of the Program are not to be construed as express or implied warranties.
LICENSOR MAKES NO CONDITIONS OR WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING BUT
NOT LIMITED TO ANY IMPLIED CONDITIONS OR WARRANTIES OF MERCHANTABI LITY, FITNESS FOR A
PARTICULAR PURPOSE, OR NON-INFRINGEMENT REGARDING THE PROGRAM AND MAKES THE
PROGRAM AVAILABLE ON AN "AS IS" BASIS.
Although no warranty is given for the Program, the media, if the Program was delivered to you on diskette(s) or CD,
will be replaced if found to be defective during the first ninety (90) days of use, when the package is returned postage
prepaid to TI. THIS PARAGRAPH EXPRESSES LICENSOR'S MAX IMUM LIABILITY AND YOUR SOLE AND
EXCLUSIVE REMEDY FOR DEFECTIVE MEDIA.
LICENSOR SHALL NOT BE RESPONSIBLE FOR ANY DAMAGES CAUSED BY THE USE OF THE PROGRAM,
OR SUFFERED OR INCURRED BY YOU OR ANY OTHER PARTY INCLUDING BUT NOT LIMITED TO SPECIAL,
INDIRECT, INCIDENTAL OR CONSEQUENTIA L DAMAGES, EVEN IF LICENSOR HAS BEEN ADVISED OF T HE
POSSIBILITY OF SUCH DAMAGES. IN JURISDICTIONS WHICH ALLOW TEXAS INSTRUMENTS TO LIMIT ITS
LIABILITY, TI’S LIABILITY IS LIMITED TO THE APPLICABLE LICENSE FEE PAID BY YOU.
Because some states or jurisdictions do not allow the exclusion or limitation of incidental or consequential damages
or limitation on how long an implied warranty lasts, the above limitations or exclusions may not apply to you.
GENERAL
This Agreement will immediately terminate if you fail to comply with its terms. Upon termination of this Agreement,
you agree to return or destroy the original package and all whole or partial copies of the Program in your possession
and so certify in writing to TI.
The export and re-export of United States original software and documentation is subject to the Export Administration
Act of 1969 as amended. Compliance with such regulations is your responsibility. You agree that you do not intend to
nor will you, directly or indirectly, export, re-export or transmit the Program or technical data to any country to which
such export, re-export or transmission is restricted by any applicable United States regulation or statute, without the
proper written consent or license, if required of the Bureau of Export Administration of the United States Department
of Commerce, or such other governmental entity as may have jurisdiction over such export, re-export or transmission.
TI-83 Plus GeoMaster™ Application Page 88
If the Program is provided to the U.S. Government pursuant to a solicitation issued on or after December 1, 1995, the
Program is provided with the commercial license rights and restrictions described elsewhere herein. If the Program is
provided to the U.S. Government pursuant to a solicitation issued prior to December 1, 1995, the Program is provided
with "Restricted Rights" as provided for in FAR, 48 CFR 52.227-14 (JUNE 1987) or DFAR, 48 CFR 252.227-7013
(OCT 1988), as applicable.
Manufacturer is Texas Instruments Incorporated, 7800 Banner Drive, M/S 3962, Dallas, Texas 75251.
TI-83 Plus GeoMaster™ Application Page 89
Page Finder
Important Information............................................................................................ 2
What is the GeoMaster Application?....................................................................3
What You Need .................................................................................................... 4
Where to Find Installation Instructions .................................................................4
Getting Started...................................................................................................... 5
Starting and Quitting the GeoMaster Application................................................ 16
GeoMaster Settings............................................................................................18
Using GeoMaster Menus....................................................................................21
Creating, Saving, and Opening Files..................................................................22
Drawing Objects ................................................................................................. 25
Calculating and Displaying Measurements......................................................... 37
Transforming Objects......................................................................................... 46
Comparing Objects.............................................................................................56
Storing and Clearing Data...................................................................................63
Moving Objects...................................................................................................71
GeoMaster Utilities..............................................................................................73
Quick Reference Guide ...................................................................................... 76
Installation Error Messages ................................................................................ 81
Checking Version Numbers and Free Space .....................................................84
Texas Instruments (TI) Support and Service Information...................................86
End-User License Agreement............................................................................. 87
TI-83 Plus GeoMaster™ Application Page 90
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