Finding The Measure Of An Angle; Defining An Angle With Three Points - Texas Instruments TI-NSPIRE Software Manual

The measurement remains visible and close to the object even if you
change the size of the object. If you alter an object, the measurement
updates to reflect the new perimeter value.

Finding the measure of an angle

1. From the Measurement menu, select the Angle tool (
2. If the angle you want to measure exists on this space, click once on
one side of the angle.
3. Click on the vertex.
4. Click once on the second side of the angle.
The measure of the angle you defined appears near it.
5. Click or press

Defining an angle with three points

You can define and measure an angle by selecting three points on the
work area.
1. From the Measurement menu, select the Angle tool (
2. Click once on the work area.
Using Graphs & Geometry
to anchor the value on the work area.
Enter
The measurements in the
example are the
perimeters of the circle
and polygon.
).
).
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