Question

exploring rotations
explore the properties of rotation by following these steps.

1. press rotate to perform a rotation of △abc about point p.
2. make a conjecture:

what do you think is the measure of the angle of rotation? 90°

1. the diagram shows two corresponding vertices connected to the center of rotation. use the protractor to measure it.

m∠apa = °
check

Explanation:

Step1: Identify the concept

The angle of rotation is measured between a point and its image about the center - of - rotation.

Step2: Use the protractor

By using the protractor to measure the angle formed by point A, the center of rotation P, and its image A', we get the angle measure.

Answer:

90