Question

Angle PQR is formed by segments PQ and QR on the following coordinate grid:

A coordinate grid is shown from positive 6 to negative 6 on the x-axis and from positive 6 to negative 6 on the y-axis. A line segment PQ is shown with P as ordered pair negative 1, negative 1 and Q as ordered pair negative 5, negative 4. Another line segment QR is shown with R as ordered pair negative 1, negative 4.

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'?

m∠P'Q'R' = 90 degrees
m∠P'Q'R' = 180 degrees
m∠P'Q'R' = m∠PQR
m∠P'Q'R' = 2 ⋅ m∠PQR

Answer 1

Answer:

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Step-by-step explanation:

Answer 2

Answer:

m∠P′Q′R′ = m∠PQR

Step-by-step explanation:

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