In the figure given below, $l\parallel m$ and $m\parallel n$. Find the values of $x,y \text{and} z$.

  

In the figure given below, $l\parallel m$. Find the value of $x$.

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

Prove that through a given point, we can draw only one perpendicular to a given line.

In the following figure, find the values of $x$ and $y$.

In the following figure, find the values of $x$ and $y$.

Find the value of $x \text{and} y$ in the following figure:

In the following figure $\angle ACD=\angle ABC$ and $CP$ bisects $\angle BCD$. Prove that $\angle APC=\angle ACP$.

In the following figure $AB\parallel CF$ and $CD\parallel FE$. Find the value of $x$.