In which of the following figures are the diagonals equal ?

For which of the following figures, all angles are equal?

For which of the following figures, diagonals are perpendicular to each other?

Which of the following pair is not diagonally related?

Which of the following have a diagonal relationship ?

For which of the following , diagonals are equal?

In which one of the following geometric figures, the length of two diagonals are equal ?

In the following figure, CE is drawn parallel to diagonal DB of the quadrilateral ABCD which meets AB produced ar point E. Prove that DeltaADE and quadrilateral ABCD are equal in area.

Which of the following shows diagonal relationship ?