Understanding Q...

The diagonals $$AC$$ and $$BD$$ of a parallelogram $$ABCD$$ intersect each other at the point $$O$$.

In Fig.8.2, $$ABCD$$ and $$AEFG$$ are two parallelograms. If $$\angle C = 55^o$$, determine $$\angle F$$.

Examine the table. (Each figure is divided into triangles and the sum of the angles deduced from that)

How many sides does a regular polygon have if each of its interior angles is $$165^{0}$$?

The adjacent figure $$\Box HOPE$$ is a parallelogram. Find the angle measures $$x, y$$ and $$z$$. State the properties you use to find them.

Given a parallelogram ABCD, if $$\angle A = 60^{\circ}$$ then $$\angle D$$ is equal to :

In figure, PQRS is a parallelogram in which $$\angle PSR=125^{\circ} , \angle RQT$$ is equal to

In figure, ABCD is a parallelogram. If $$ \angle DAB = 60^{\circ}\ and\ \angle DBC = 80^{\circ},\angle  CDB $$ is :

Two consecutive angles of a parallelogram are in the ratio $$1 : 3$$, then the smaller angle is :

In parallelogram ABCD, if $$ \angle A = 2x + 15^{\circ}, \angle B = 3x - 25^{\circ}, $$ then value of $$x$$ is :