ABCD is a parallelogram. A circle passing through C and D intersects AD and BC at the points E and F. Prove that the four points E, A, B, F are concyclic.

ABCD is parallelogram A circle passing through the points A and B intersect the sides AD and BC at the points E and F repectively . Prove that the four points E, F , C ,D are concyclic.

ABCD is a parallelogram.The circle through A.B and intersects CD produced at E.show that AD=AE .

ABCD is a cyclic quadrilateral. A circle passing through A and B meets AD and BC in E and F respectively. Prove that EF||DC

ABCD is a parallelogram.The circle through A,B and C intersects CD produced at E, prove that AE=AD

ABCD is a parallelogram. The circle through A, B and C intersect CD (produced if necessary) at E. Prove that AE = AD.

ABCD is a parallelogram.The circle through A ,B and C intersect CD( produced if necessary) at E.Prove that AE=AD

ABCD is a parallelogram. The circle through A, B and C intersect CD (produced if necessary) at E. Prove that AE = AD.

ABCD is a parallelogram. The circle through A, B and C intersect CD (produced if necessary) at E. Prove that AE = AD.

In Figure,ABCD is a cyclic quadrilateral.A circle passing through A and B meets AD and BC in the points E and F respectively.Prove that EFDC

ABCD is a parallelogram . The circle passing through the vertices. A, B and C intersects CD (or CD produced) at E. Prove that AE=AD .