Question

if diagonal of a parallelogram are equal then show it is a rectangle​

Answer 1

Yes if diagonals of a parallelogram are equal then it is a rectangle. Let PQRS be a parallelogram. To show that PQRS is a rectangle, we have to prove that one of its interior angles is 90º. ... One diagonal is given by a → − b → , the other by a → + b → .

Answer 2

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