Application Guide

99 Geometry Application
Using the Calculate Tool
The Calculate tool is available in the Graphs and Geometry applications. It lets you
evaluate a math expression you have entered as a text object. You can edit an
evaluated expression, and then re-evaluate it.
Entering the Expression
1. Tap Tools and go to Actions > Text.
2. Tap the work area to place the text box and display the keyboard.
3. Type the expression, such as (1/4)
2
*2, and tap ENTER.
Note: Do not include variables in the expression.
Calculating the Result
1. Tap Tools and go to Actions > Calculate.
The Calculate tool appears in the toolbar, and a prompt asks you to select an
expression to calculate.
2. Tap the text object to evaluate the expression.
Creating Shapes Using Gestures (MathDraw)
The MathDraw tool lets you use touchscreen gestures to create points, lines, circles,
and other shapes.
• MathDraw is available in Geometry and Graphing.
• Graphing view when the x scale and y scale are identical. This avoids non-circular
ellipses and non-square rectangles appearing as circles and squares.
Note: MathDraw is not available in the 3D Graphing.
Activating MathDraw
1. Tap Add, and then tap .
2. Tap Tools .
3. Tap Actions menu, select MathDraw.