Understanding Q...

The diagonals AC & BD of parallelogram ABCD intersect each other at P of $$\angle DAC = 40^o$$ & $$\angle APB = 80^o$$. Then $$\angle DBC$$ is equal to ___ .

In $$\triangle $$ABC, BDEF and FDCE are parallelogram. Which of the following is correct?

PQRS is a parallelogram, the bisector of $$\angle $$P also bisects SQ, PQ = 5 cm. Find PS.

In a parallelogram PQRS, find $$\angle RSQ$$ if $$\angle SPQ = 70^o$$ & $$\angle RQS = 60^o$$.

The value of $$xy$$ for parallelogram $$ABCD$$ is :

If ABCD is a parallelogram, then how are the angles 'x' and 'y' related?

In a parallelogram $$ABCD$$, $$AB=4\ cm$$ and $$BC = 7\ cm$$. Each of its diagonals is less than which of the given options?

The perimeter of a parallelogram,whose one side measures $$12$$ inches, is 72 inches. Find the length of its other three sides.

In figure, if $$ABCD$$ is a parallelogram, $$\angle ADE = 40^{\circ}$$, and $$\angle C = 110^{\circ}$$, calculate the measure of $$\angle BED$$.

In the given figure, find $$\angle BDC$$.