Question

In which situation the parallelogram became rectangle​

Answer 1

Answer:

Theorem 16.5: If the diagonals of a parallelogram are congruent, then the parallelogram is a rectangle.

Step-by-step explanation:

Answer 2

Answer:

When one angle is 90°

Step-by-step explanation:

Since, property of rectangle says,

Opposite sides are equal and parallel

and each angle is 90°

and, in a parallelogram opposite sides are parallel and equal

and adjacent angles are supplementary

So, when one angle of a ||gm becomes 90° all angles become 90° and it becomes a rectangle.