Question

Name a parllelogram whose all sides are equal and one angle is 90 degree.​

Answer 1

Answer:

Square is your answer.

Cheers!

Answer 2

Step-by-step explanation:

The four internal angles of a parallelogram add up to 360 degrees, so the only way that the four angles can be equal is if each angle is 90 degrees, or a right angle. A four sided object with equal length adjacent sides all at right angles (90 deg) to each other is a square.