Casio ClassPad 300 PLUS User Manual page 439

k Fixing a Measurement of a Figure
By "fixing a measurement" we mean that a constraint is placed on the figure. For example, if
we fix (constrain) a point to a circle and move the circle, the point will also move.
The following example shows how to fix the size of an angle of a triangle.
u To fix the measure of an angle of a triangle
(1) Draw the triangle.
(2) Select side AB and then select side BC.
(3) Input 90 into the measurement box, and then select the check box to the right of it.
• This fixes the measure of angle B at 90 degrees.
8-3-9
Editing Figures
20050501
A highlighted check box
indicates the measurement
is fixed (constrained).