In the figure, it is given that BDEF and FDCE are parallelogram. Can you say that BD = CD ? Why or why not?

In the given figure, it is given that BDEF and FDCE are aprallelograms. Can you say that BD=CD? Why or why not?

In Figure,BDEF and DCEF are each a parallelogram.Is it true that BD=DC? Why or why not?

In the figure, If AC=BD then prove that AB=CD.

Is ACBD in the figure, a parallelogram?. Why?

In the given figure AC = BD, prove that AB = CD.

In the adjacent figure, BD and CE are altitudes of Delta ABC such that BD = CE Is angle DBC = angle ECB ? Why or why not

In Fig, BD and CE are altitudes of triangleABC such that BD = CE. Is angleDCB = angleEBC ? Why or why not?

The diagonals of a parallelogram are not perpendicular. Is it a rhombus? Why or why not?