Identify the pairs of parallel lines and the transversal line in the given figure

Find $\angle ABC$ and $\angle ACB$ in the figure given below if $AE\parallel BC$.

In $△ABC$, $PQ\parallel BC$. Find the value of $x$ and $y$.

In the given figure $l\parallel m\parallel n$ and $p\parallel q$, find $x, y$ and $z$.

In the following figure, where $AB\parallel DC$, $AD\parallel BC$, one angle is given, find $a, b$ and $d$

Find $x$ and $y$ from the following figure, given $l\parallel m$, $p\parallel q$.

If $l\parallel m$, find $x$ from the given figure. [Answer without the degree symbol]

$l\parallel m$ and $p$and $q$ are transversal lines on them. Find the sum of the following angles from the figure.

$\angle 1+\angle 5$, $\angle 3+\angle 5$ and if $\angle 11=90°,$find $\angle 10$ and $\angle 9$

In the given figure $l\parallel m\parallel n$, find $\angle y$ and $\angle 2$ while$\angle z=\angle 1+\angle 2$