Specifying And Constraining A Measurement Of A Figure - Casio fx-CP400 User Manual

Icon Icon Name
e
Congruence
Incidence
6
Point on curve
F
Rotation angle
2
Scale of dilation
u
Text icon
*1 The value in the measurement box is always locked while this tool is selected.
u To view the measurements of a line segment
1. Draw a line segment.
2. Tap u on the toolbar to display the measurement box.
3. Select the line segment.
• This displays the length of the line segment.
4. Tap the down arrow next to the
measurement box to cycle through other
measurements.
• In the case of the line segment, for
example, you can view its length, slope,
direction, and equation.

Specifying and Constraining a Measurement of a Figure

The following example shows how to specify and constrain (fix) an angle of a triangle. By "constraining a
measurement" we mean that it becomes fixed. For example, constraining (fixing) angle B of triangle ABC at 90
degrees will cause angle B to remain at 90 degrees regardless of where the apex is moved.
u To specify and constrain the measure of an angle of a triangle*
1. Draw the triangle, and then select its side AB and side BC.
2. Tap u on the toolbar to display the measurement box.
• This displays the measure of angle B in the measurement box.
This icon appears when this
is selected:
Two line segments
Point and a line, arc, circle or
vector
Point and a function, curve, or
ellipse
Two points created by
[Rotation]
Two points (like point A and
point A') on a figure created by
[Dilation]
An object that includes text or
an object that can be named
Tapping this icon displays:
Whether line segments are the
same length
Whether a point is on the line/
curve
Angle of rotation
Scale of dilation
Editable text used to name the
selected image
Chapter 8: Geometry Application
Lockable
Yes
Yes
*1
*1
No
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