R. D. Sharma Solutions for Chapter: Lines and Angles, Exercise 4: EXERCISE

In the following figure $l, m$ and $n$ are parallel lines intersected by transversal  $p$ at $X, Y$ and $Z$ respectively. Find $\angle 1, \angle 2$ and $\angle 3$.

In the following figure, if $AB\parallel CD$ and $CD\parallel EF$, find $\angle ACE$.

In the following figure, state which lines are parallel and why.

In the following figure, if $l\parallel m, n\parallel p$ and $\angle 1=85°$. If $\angle 2=k°$ then find $k$.

If two straight lines are perpendicular to the same line, prove that they are parallel to each other.

Two unequal angles of a parallelogram are in the ratio $2:3$ Find all its angles in degrees.

In the following figure, if $l \Vert m \Vert n$ and $\angle 1=60°,$ find $\angle 2$

In the following figure, $AB\left|\right|CD\left|\right|EF$  and $GH \Vert KL$. Find $\angle HKL$