Draw a pair of parallel lines which are $5 cm$ apart.

In the figure, two parallel lines $I$ and $m$ are intersected by a transversal $n$ at the points $A$ and $B$ respectively. Find the value of $x,y$ and $z$.

In the figure $l\parallel m.$ Express $x$ and $y$ in terms of $\angle A$ and $\angle C$. Name the transversals. Is $\angle x+\angle B+\angle y=180°?$ Why$?$

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

$x<y$

$x=y=90°$

$x+y=180°$

$x-y=180°$

In the figure , $ABC$ is a triangle with $\angle A =64°.$ The bisectors of $\angle B$ and $\angle C$ meet at a point $O$ .Find $\angle BOC$.