Question

show that the bisectors of the angles of a parallelogram include a rectangle

Answer 1

In this question,

It is given that ABCD is a parallelogram in which bisector bisect each other.

To Prove that :- EFGH will be a Rectangle.

In this we will prove this rectangle by using angle prove. We will prove one angle of rectangle so that all other three angle will also be equal.

Hence we will prove that EFGH will be a Rectangle.

For further calculations. Refer to this attachment.