Lines and Angle...

If angle $$P$$ and angle $$Q$$ are supplementary and the measure of angle $$P$$ is $$60^o$$, then the measure of angle $$Q$$ is: 

In the figure, if OP||RS, $$\angle OPQ=110^0 and \angle QRS =130^0$$, then $$\angle PQR$$  is equal to

Lines PQ and RS intersect at O. If $$\angle POS = 2 \angle SOQ$$, then the four angles at O are:

If one of the angles formed by two intersecting lines is a right angle, what can you say about the other three angles? 

What value of $$\angle$$FEC will make $$CD \parallel EF$$, and AB||CD ?

From the given figure, we can say that

In the given figure, $$l||m||n$$, If $$x : y = 5 : 4$$, then the measure of angle z is :

The angle which exceeds its complement by $$20^{\circ}$$ is:

In the given figure, $$\angle QPB$$  is,

In the given figure, $$ AE\parallel BD $$,  $$ AC\parallel ED $$ and $$ AB = AC $$. Find $$ \angle a  $$.