Question

exploring rotations
explore the properties of rotation by following these steps.
△abc about point p.

1. 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 =

Explanation:

Step1: Identify the task

Measure $\angle APA'$ using protractor.

Step2: Read the protractor

Align the center of protractor with point $P$ and zero - degree line with one of the rays of $\angle APA'$. Then read the degree measure where the other ray intersects the protractor. Since the conjecture for the angle of rotation is $90^{\circ}$, and $\angle APA'$ represents the angle of rotation, we expect the measure to be $90^{\circ}$.

Answer:

$90$