If ABCD is a quadrilateral whose diagonals AC and BD interest at O, prove that:
(1). (AB+BC+CD+DA)(AC+BD)
(2).(AB+BC+CD+DA)

Question

If ABCD is a quadrilateral whose diagonals AC and BD interest at O,
prove that:
(1) (AB+BC+CD+DA)(AC+BD)
(2) (AB+BC+CD+DA)

Abhishek Kr. Jha · Accepted Answer

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If ABCD is a quadrilateral whose diagonals AC and BD interest at O, prove that: (1). (AB+BC+CD+DA)(AC+BD) (2).(AB+BC+CD+DA)

If ABCD is a quadrilateral whose diagonals AC and BD interest at O, prove that:
(1). (AB+BC+CD+DA)(AC+BD)
(2).(AB+BC+CD+DA)