# Prove that

Submitted by alpha on Wed, 08/27/2008 - 12:28.

the sum of squares of the sides of a parallelogram is equal to the sum of the squares of its diagonals.

## Navigation## User login |
## Prove that
Submitted by alpha on Wed, 08/27/2008 - 12:28.
the sum of squares of the sides of a parallelogram is equal to the sum of the squares of its diagonals. |