Casio Geometry User manual

http://edu.casio.com
Add-in application for fx-9860G series/ E
GRAPH 85 series calculators
Geometry
User’s Guide

20060601
Contents
Contents
1 Geometry Mode Overview
2 Drawing and Editing Objects
3 Controlling the Appearance of the Geometry
Window
4 Using Text and Labels in a Screen Image
5 Using the Measurement Box
6 Working with Animations
7 Error Messages

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Geometry Mode Overview
1. Geometry Mode Overview
The Geometry Mode allows you to draw and analyze geometric objects.You can draw a
triangle and specify values to change the size of its sides so they are 3:4:5, and then check
the measurement of each of its angles.You can also lock the coordinates of a point or the
length of a line segment, and you can draw a circle and then draw a line that is tangent to a
particular point on the circle. The Geometry Mode also includes an animation feature that lets
you watch how an object changes in accordance with conditions you define.
Geometry Mode Menus
Unlike other modes, the Geometry Mode does not have function menus along the bottom of
the screen. Instead, it uses menus named [F1] through [F6] and [OPT], like the ones shown
below.
The following is a general explanation of Geometry Mode menus.
• Pressing a key that corresponds to a menu ([F1] through [F6] or [OPT]) will display the
menu for that tab.
• After displaying a menu, use eand dto move between menu screens.
• To close a menu without selecting anything, press J.
kMenu Operations in This Manual
This manual shows menu operations using the following form: 3(Draw) – 5:Vector. When
you see this, it means you can perform either of the following two operations.
• Press 3to display the Draw menu, use cand fto highlight “5:Vector”, and then
press w.
• Press 3to display the Draw menu and then press f.
Menu Reference
The following tables describe the menu items that appear on each of the Geometry Mode
menus.
k1(File)
To do this: Select this menu item:
Create a new file 1:New
Open a file 2:Open
Save a file under a new name 3:Save as
Display a list of functions assigned to each key 4:Key Help

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Geometry Mode Overview
k1e(View)
To do this: Select this menu item:
Start a box zoom operation 1:Zoom Box
Enter the pan mode (page 3-3) 2:Pan
Enter the scroll mode (page 3-4) 3:Scroll
Enlarge the display image 4:Zoom In
Reduce the size of the display image 5:Zoom Out
Adjust the size of the display image so it fills the display 6:Zoom to Fit
k2(Edit)
To do this: Select this menu item:
Undo or redo the last operation 1:Undo/Redo
Select all objects on the screen 2:Select All
Deselect all objects on the screen 3:Deselect All
Select an entire polygon (page 2-8) 4:Select Figure
Delete the currently selected object 5:Delete
Clear the screen 6:Clear All
k3(Draw)
To do this: Select this menu item:
Plot a point 1:Point
Draw a line segment 2:Line Segment
Draw a straight line 3:Infinite Line
Draw a ray 4:Ray
Draw a vector 5:Vector
Draw a circle 6:Circle
Draw an arc 7:Arc
Draw a triangle 8:Triangle
Draw an isosceles triangle 9:Isosc Triangle
Draw a rectangle A:Rectangle
Draw a square B:Square
Draw a polygon C:Polygon
Draw a regular n-gon D:Regular n-gon

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Geometry Mode Overview
k4(Construct)
To construct this: Select this menu item:
A perpendicular bisector 1:Perp Bisector
A perpendicular 2:Perpendicular
A midpoint 3:Midpoint
An intersection 4:Intersection
An angle bisector 5:Angle Bisector
A parallel 6:Parallel
A tangent 7:Tangent
k5(Transform)
To do this: Select this menu item:
Reflect an object 1:Reflection
Translate an object by specified values 2:Translation
Translate an object using an existing vector 3:Trans(Sel Vec)
Rotate an object 4:Rotation
Dilate an object 5:Dilation
k6(Animate)
To do this: Select this menu item:
Add animation to two selected objects 1:Add Animation
Replace the current animation assigned to two selected
objects 2:Replace Anima
Turn on trace for a point and trace the movement of the point
while animation is being executed 3:Trace
Display the animation editing screen 4:Edit Animation
Perform an animation sequence once 5:Go (once)
Perform an animation sequence repeatedly 6:Go (repeat)
Add one or more values to the animation table (page 6-7) 7:Add Table
Display the animation table 8:Display Table

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Geometry Mode Overview
kK(Option)
To do this: Select this menu item:
Input text 1:Text
Input an expression 2:Expression
Specify the number format Geometry Mode measurements 3:Number Format
Unlock all measurements 4:Clr Constraint
Display all objects 5:Show All
Hide the currently selected object 6:Hide
Using the Pointer
You can use the following operations to move the on-screen pointer (2) around the display
when drawing objects, editing objects, etc.
uTo move the pointer
Use the cursor keys to move the pointer around the display. Holding down a cursor key
moves the pointer at high speed.
uTo make the pointer jump to a particular location
Pressing a number key (bto j) will cause the pointer to jump to the corresponding
section of the screen as shown below.
hij
efg
bcd

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Geometry Mode Overview
Using Key Help
Pressing 1(File) – 4:Key Help or the akey will display Key Help, which provides
information the function of each key in the Geometry Mode.
Use the cand fkeys to navigate between the three Key Help screens.
To exit the Key Help screens, press J.
Note
The key operations shown on the Key Help screens apply to the drawing screen only.
Managing Geometry Mode Files
This section explains how to save Geometry Mode data to files, and how to manage your
files.
Note
Whenever you save a file in the Geometry Mode, it is stored in main memory in a folder
named “<@GEOM>”.You can use the calculator’s MEMORY mode to view the data in main
memory. For more information, see the manual that comes with your calculator.
uTo create a new file
1. Perform the following operation: 1(File) – 1:New.
• The following dialog box will appear if you have a drawing on the screen.
2. To clear the current drawing and create a new file, press 1(Yes).
• This will create a new file and display a blank drawing screen.

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Geometry Mode Overview
uTo open an existing file
1. Perform the following operation: 1(File) – 2:Open.
• This displays a menu of existing files.
2. Use cand fto move the highlighting to the file you want to open and then press w.
• The following dialog box will appear if you have a drawing on the screen.
3. To clear the current drawing, press 1(Yes).
• This will open the file you selected in step 2.
uTo delete a file
1. Perform the following operation: 1(File) – 2:Open.
• This displays a menu of existing files.
2. Use cand fto move the highlighting to the file you want to delete and then press
1(DEL).
• This causes a confirmation dialog box to appear.
3. Press 1(Yes) to delete the selected file or 6(No) to cancel the delete operation.
4. To exit the file menu, press J.

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Geometry Mode Overview
uTo save a file under a different name
1. While the file you want to save is open, perform the following operation: 1(File) –
3:Save as.
• This will display the file name input screen and automatically switch the calculator’s keys
to Alpha Lock.
The cursor changes to
0when the
keyboard is in Alpha Lock.
2. Input up to 8 characters for the file name and then press w.
• You can use the following characters in a file name.
-Uppercase alphabetic characters A through Z
-Lower-case rand Greek letter
θ
-Numerals 0 through 9
-Period (.), blank space, quotes ("), plus sign (+), minus sign (–), multiplication sign (×),
division sign (÷), brackets ([ ]), braces ({ })
• After inputting the name you want, press wto save the file and return to its drawing
screen.

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Geometry Mode Overview
Key Functions
The figure below shows the keys that are used for Geometry Mode drawing screen
operations.
Displays menus.
(Page 1-1)
Selects an entire polygon.
(Valid for polygons only.)
(Page 2-8)
Displays Key Help.
(Page 1-5)
Selects, deselects,
executes.
Selects, deselects,
executes.
Zooms in/out.
(Page 3-5)
Undoes/Redoes an
operation.
(Page 2-19)
Moves the pointer.
Selects, deselects,
executes.
Selects an object to
move it. (Page 2-20)
!bAdds an
animation table.
(Page 6-7)
Causes the pointer to
jump to a particular
position. (Page 1-4)
Enters the Scroll
mode. (Page 3-4)
Zooms the screen
image to fit the
window area.
(Page 3-5)
Displays the
measurement box.
(Page 5-1)
Cancels an operation,
or returns to the
previous menu or
screen.
Deletes the currently
selected object.
(Page 2-21)
Deselects all, cancels
an operation, deletes
all (when pressed
twice).
Displays menus.
(Page 1-1)
Selects an entire polygon.
(Valid for polygons only.)
(Page 2-8)
Displays Key Help.
(Page 1-5)
Selects, deselects,
executes.
Selects, deselects,
executes.
Zooms in/out.
(Page 3-5)
Undoes/Redoes an
operation.
(Page 2-19)
Moves the pointer.
Selects, deselects,
executes.
Selects an object to
move it. (Page 2-20)
!bAdds an
animation table.
(Page 6-7)
Causes the pointer to
jump to a particular
position. (Page 1-4)
Enters the Scroll
mode. (Page 3-4)
Zooms the screen
image to fit the
window area.
(Page 3-5)
Displays the
measurement box.
(Page 5-1)
Cancels an operation,
or returns to the
previous menu or
screen.
Deletes the currently
selected object.
(Page 2-21)
Deselects all, cancels
an operation, deletes
all (when pressed
twice).
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