In the adjoining figure, the diagonals AC and BD of a quadrilateral ABCD intersect point O. Prove that :
`AB+BC+CD+DA lt 2(AC+BD)`

In the adjoining figure, the diagonals AC and BD of a quadrilateral ABCD intersect at O. If BO = OD , prove that ar(triangleABC)=ar(triangleADC) .

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)

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)

The given figure shows a quadrilateral ABCD. Prove that : AB+BC+CD+DA gt AC+BD

The given figure shows a quadrilateral ABCD. Prove that : AB+BC+CD+DA gt AC+BD

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

ABCD is a quadrilateral whose diagonals AC and BD intersect at O, prove that: (AB+BC+CD+DA)>(AC+BD)

In Fig 9.25 ,diagonals AC and BD of quadrilateral ABCD intersect at O such that OB= OD.If AB=CD, then show that

In the figure, diagonals AC and BD of quadrilateral ABCD intersect at 0 such that OB = OD. If AB = CD, then show that DA I I CB or ABCD is a parallelogram.

In the figure, diagonals AC and BD of quadrilateral ABCD intersect at O such that OB = OD. If AB = CD, then show that ar( Delta DOC) = ar( Delta AOB)