State whether the following quadrilaterals are similar or not:

Two polygons of the same number of sides are similar, if

a) All the corresponding angles are equal.

b) all the corresponding sides are in the same ratio (or proportion)

In case of quadrilaterals ABCD and PQRS

and ∠A=∠B =∠C =∠D =∠P =∠Q =∠R=∠S =90°

The corresponding sides of a quadrilateral ABCD and PQRS are not proportional. Hence, quadrilaterals ABCD and PQRS are not similar.