For what value of $\mathrm{x}$ will the lines $l$ and $m$ be parallel to each other?

In the given figure, $AB\parallel CD$ and $BC\parallel ED$. Find the value of $x$.

In the given figure, $AB\parallel CD\parallel EF$. Find the value of $x$.

In the given figure, $AB\parallel CD$. Find the values of $x, y\mathit{ }$and $z$.

In the figure given below, $\mathrm{AB}\parallel \mathrm{CD}$. Find the value of $\mathrm{x}$ in the following case.

In each of the figure given below, $\mathrm{AB}\parallel \mathrm{CD}$. Find the value of $\mathrm{x}$ in the following case.

In the figure given below, $\mathrm{AB}\parallel \mathrm{CD}$. Find the value of $\mathrm{x}$ in the following case.

In the given figure, $AB\parallel \mathrm{CD}$. Find the value of $x$.

In the given figure, $AB\parallel PQ$. Find the value of $x$ and $y$.