Answer:
90°
Explanation:
So we know that ∠PRM is 120° and that line m would be 180°, we would subtract 120 from 180 to get 60°.
So ∠PRQ is 60°.
All the angles of a triangle equals to 180°.
∠PQR is given as 30°. So we will need to add 60+30=90.
180-90=90. So ∠QPR is 90°.