Ask your own question, for FREE!
Mathematics 8 Online
OpenStudy (anonymous):

By using vector method , prove that the sum of the squares of the diagonals of a parallelogram is equal to the sum of the square of its sides.

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!