Question

the image of trapezoid pqrs after a reflection across wy is trapezoid pqrs. what is m∠yxs? 270°, 90°, 180°, 45°

Explanation:

Step1: Reflection property

Reflection line ⊥ segment joining original/image points.

Step2: Perpendicular angle

∠YXS is between reflection line WY and SS', so 90°.

Answer:

90°