1.

In a quadrilateral ABCD, prove that AB2+BC2+CD2+DA2=AC2+BD2+4PQ2, where P and Q are middle points of diagonals AC and BD.

Answer» In a quadrilateral ABCD, prove that AB2+BC2+CD2+DA2=AC2+BD2+4PQ2, where P and Q are middle points of diagonals AC and BD.


Discussion

No Comment Found