Question

if all the angles of a parallalogram are equal,prove that it is a rectangle​

Answer 1

Step-by-step explanation:

Sum of all angles in a quadrilateral is 360 degrees

If all the angles in a parallelogram are equal then,

x + x + x + x = 360

4x = 360

x = 90 degrees

Then all the angles in the parallelogram are 90 degrees

In a rectangle also all the angles are 90 degrees

Hence proved