If in the cyclic quadrilateral AB||CD , then prove that AD =BC and AC=BD.

If in a cyclic quadrilateral ABCD, AB=DC , then prove that AC=BD

In the the cyclic quadrilateral ABCD,AB =CD . Prove that AC= BC

If ABCD is a cyclic quadrilateral, then prove that AC.BD=AB.CD+BC.AD

In cyclic quadrilateral ABCD, AD|| BC. Prove that AB = CD.

ABCD is a cyclic quadrilateral. If AB = DC, then prove that AC= BD.

If the sides of a quadrilateral ABCD touch a circle prove that AB+CD=BC+AD.

If the sides of a quadrilateral ABCD touch a circle prove that AB+CD=BC+AD.

A cyclic quadrilateral ABCD is such that AB=BC,AD=DC and AC and BD intersect at O. If angleCAD=46^@ , then the measure of angleAOB is equal to:

In a quadrilateral ABCD, show that (AB+BC+CD+DA)gt(AC+BD) .

In quadrilatcal ABCD,prove that AB+BC+CD+AD<2(BD+AC)