" 13.ABCD is a cyclic quadriateral,in which AB "|" BC,then prove that "/_B=/_C" ."

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

If ABCD is a cyclic quadrilateral in which ADBC( In figure).Prove that /_B=/_C

If ABCD is a quadrilateral in which AB|CD and AD=BC, prove that /_A=/_B.

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

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

ABCD is a cyclic quadrilateral in which AB and DC on being produced , meet at P such that PA = PD. Prove that AD is parallel to BC .

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

ABCD is cyclic quadrilateral in which AB and CD when produced meet in E and EA = ED. Prove that (i) AD || BC (ii) EB=EC

ABCD is a cyclic quadrilateral in which BA and CD when produced meet in E and EA = Ed. Prove that AD ||BC

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