Q:

I really need help!Angle PQR is formed by segments PQ and QR on the following coordinate grid:Angle PQR is rotated 90 degrees counterclockwise about the origin to form angle P′Q′R′. Which statement shows the measure of angle P′Q′R′?a. m∠P′Q′R′ = 90 degreesb. m∠P′Q′R′ = 180 degreesc. m∠P′Q′R′ = m∠PQRd. m∠P′Q′R′ = 2 ⋅ m∠PQR

Accepted Solution

A:
Answer:   c. m∠P'Q'R' = m∠PQRStep-by-step explanation:Rotation is a rigid transformation. It does not change lengths or angles.