In the adjoining figure, the measure of $\angle AED$ is 

     

In the adjoining figure, if $QP\parallel RT$, then $x$ is equal to

In the adjoining figure, if $l\parallel m$, then $\angle x$ is equal to

In the adjoining figure, $AB\parallel CD$. The value of $x$ which will make $EF\parallel CD$ is

In the adjoining figure, two plane mirrors $I$ and $II$ are placed parallel to each other. $AM$ and $BN$ are perpendiculars to the mirrors $I$ and $II$ respectively. If an incident ray strikes the mirror $I$ at $A$ and the reflected ray strikes the mirror$II$ at $B$, then the value of $x$ is

In the adjoining figure, two plane mirrors $I$ and $II$ are placed perpendicular to each other. $PM$ and $QN$ are perpendiculars to the mirrors $I$ and $II$ respectively. If an incident ray strikes the mirror $I$ at $P$ and the reflected ray strikes the mirror$II$ at $Q$, then the value of $x$ is

In the adjoining diagram, $DE\parallel BC$. Find the value of $x$.

In the adjoining figure, lines $AB$ and $CD$ are parallel. Find the values of $x$ and $y$.

All linear pairs are supplementary angles whereas all supplementary angles are not linear pairs.