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

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

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

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

In a quadrilateral ABCD, AB= AD and CB= CD. Prove that: AC bisects angle BAD

A quadrilateral ABCD is drawn to circumscribe a circle. Prove that AB+CD=AD+BC. or A circle touches all the four sides of a quadrilateral ABCD. Prove that AB+CD=BC+DA.

A circle touches all the four sides of a quadrilateral ABCD .Prove that: AB+CD=BC+DA

The diagonals of cyclic quadrilateral ABCD are congruent. Show that AD=BC and seg AB || seg CD.

In a cyclic quadrilateral ABCD, AB = BC, AD = DC, AC_|_BD, angleCAD=theta . Then angleABC will be-