Let be the perpendicular to the line segment. Let and intersect in the point A. What is the measure of ∠PAY?

Let’s draw the line segment XY first,

Now draw PQ perpendicular to XY and intersecting at point A.

As PQ is a perpendicular to XY so it will form a right angle at intersecting point.

As we can see in the figure ∠PAY is of 90°.