" 7.If ABCD is a square then show that the points A,B,CandD are concyclic."

If ABCD is a square then show that the points, A,B, C and D are concyclic.

If ABCD is a square then show that the points, A,B, C and D are concyclic.

If ABCD is a square, then show that AC^2=2AB^2

In the given figure,AE =DE and BC|AD . Prove that the points A,B,C and D are concyclic.Also,prove that the diagonals of the quadrilateral ABCD are equal.

In Figure, A B C is a triangle in which A B=A Cdot Point D and E are points on the sides AB and AC respectively such that A D=A Edot Show that the points B , C , E and D are concyclic.

In Figure,ABC is a triangle in which AB=AC. Point D and E are points onthe sides AB and AC respectively such that AD=AE .Show that the points B,C,E and D are concyclic.

ABCD is a rectangle.The line through C perpendicular to AC meets AB produced at X and AD produced at Y. Prove that the points D,B,X,Y are concyclic.

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.