A point O in the interior of rectangle ABCD is joined with each other of vertices A,B,C and D. Prove that- OB^2+OD^2=OC^2+OA^2.

A point O in the interior of rectangle ABCD is joined with each other

1.	A point O in the interior of rectangle ABCD is joined with each other of vertices A,B,C and D. Prove that- OB^2+OD^2=OC^2+OA^2.
Answer» A point O in the interior of rectangle ABCD is joined with each other of vertices A,B,C and D. Prove that- OB^2+OD^2=OC^2+OA^2.