Question

if the diagonals of a parallelogram are equal, then show that it is a rectangle.

Answer 1

yes,parallelogram is also known as rectangle because all diagonals are equal and sides are parallel.


I hope it is right

Answer 2

let the parallelogram be ABCD
take any triangle abc and abd , prove them congruent by sss rule .
by cpct u will get that angle a = angle b.
prove all these adjacent triangles congruent and by cpct prove that all angles are equal therefore each angle is 90 .
therefore it is rect .