Parallel lines that are in the same plane never intersect.

Alternate interior angles are not equal.

The perpendicular distance between two parallel lines remains constant.

The two pairs of same side interior angles are complementary.

When two coplanar lines are cut by a transversal and a pair of corresponding angles formed are equal, then the two lines are parallel.

If $l\parallel m$, then value of $x$ is

Find the value of $x$ so that $P\parallel q$.

For two parallel lines and a transversal, $\mathrm{\angle }1=85°$. For which pair of angles measures is the sum least?