O P Malhotra, S K Gupta and, Anubhuti Gangal Solutions for Chapter: Parallel Lines, Exercise 3: Revision Exercise

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.

In Fig. find $\angle d$.

In Fig. find the value of $x$ if $l\parallel m$.

The two interior angles lying on the same side of the transversal are_____.

Lines $p,q,r$ are parallel to each other. Find $\angle a$.