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3. Input 90 into the measurement box and press E.
• This specifies and constrains the measure of angle B at 90 degrees.
A highlighted check box indicates the measurement is constrained (fixed).
* In this example, the [Measure Angle] setting of the Geometry Format dialog box (page 40) is set to "Degree".
Tip:
To cancel the constraint of a measurement value fixed using the above operation, tap the check box to the right of
the measurement box to unhighlight it. Each tap of the check box toggles the measurement value between fixed and
unfixed.
u To clear all settings constrained with the measurement box
Tap [Edit] and then [Clear Constraints].
Using Sliders
Sliders can be displayed and used to change the settings of the objects in the table below. Select the desired
object and then display its slider using the procedure following the table.
For this type of selected object(s):
Any two sides of a polygon or two line segments
Two points on one figure or two different figures, or a single
line segment or a vector
Single circle or arc
u To display a slider
1. Select the required object(s), as described in the table above.
2. Tap [Draw] - [Slider]. On the sub-menu that appears, select the type of
measurement ([Angle], [Supplementary Angle], [Length], [Radius]) you want
to perform with the slider.
• The items that appear on the sub-menu depend on the object you select in
step 1 of this procedure.
Note:
Instead of step 2 in the above procedure, you could also perform the
steps below to display a slider.
(1) Tap u on the toolbar to display the measurement box.
(2) Tap the down arrow to the right of icon palette on measurement box
and then a.
This type of slider can be displayed:
Angle, supplementary angle
Length
Radius
Chapter 8: Geometry Application 172
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