Question

PQRS is a parallelogram in which (angle)R = 90°. Prove that PQRS is a rectangle.​

Answer 1

Answer:

It is easy and Tricky one....

Step-by-step explanation:

We have parallelogram PQRS such that (angle)R = 90 °

Then , It's opposite angle will be angle(P) = 180 - 90° = 90°

Also , We know sum of angles on same side of Parallelogram are equal to 180° , then angle(Q) and Angle (S) = 90°

Since parallelogram has opposite sides equal and parallel and 90° each angle , Then we can say that our Parallelogram is also a Rectangle.....