Karnataka Board Solutions for Chapter: Lines and Angles, Exercise 2: EXERCISE 5.2

State the property that is used in the following:

If $\mathrm{\angle }4+\mathrm{\angle }5=180°$, then $\mathrm{a}\parallel \mathrm{b}$.

In the adjoining figure, identify the pairs of corresponding angles.

In the adjoining figure, identify the pairs of alternate interior angles.

In the adjoining figure, identify the pairs of interior angles on the same sides of the transversal.

In the adjoining figure, identify the vertically opposite angles.

In the adjoining figure, $\mathrm{p}\mathrm{}\left|\right|\mathrm{}\mathrm{q}$. Find the unknown angles.

In the figure given below, decide whether $l$ parallel to $m$. Write Yes or No.

In the given figure below, decide whether $l$ is parallel to $m$. Write "Yes" or "No".