Question

A parallelogram must be a rectangle if it's diagonals:A. are congruentB. are perpendicular to each otherC. bisect each otherD. bisect the angles in the parallelogram

Answer 1

The main difference between the diagonals of a rectangle and the diagonals of a parallelogram is that the diagonals of a rectangle are always congruent.

So, for a parallelogram to be a rectangle as well, its diagonals must be congruent.

Therefore the correct option is A.