In the adjoining figure, ABCD is a quadrilateral. Its diagonals AC and BD intersect at point
Channel: Doubtnut
Date: 2019-12-27

In the adjoining figure, ABCD is a quadrilateral. Its diagonals AC and BD intersect at point \'O\'. Prove that : (a) `AB+BC+CD+DA lt 2(AC+BD)` (b) `AB+BC+CD+DA gt (AC+BD)`

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