Question

Lines $p$ and $q$ are

• A. Parallel Lines
• B. Intersecting Lines
• C. non-parallel lines
• D. None

Answer 1

The correct option is A Parallel Lines

Concept: If two lines are cut by a transversal and sum of its co-interior angles is ${180}^o$, then the two lines are parallel.

In the given figure, sum of the cointerior angles is ${180}^o$ so, by converse of cointerior angle theorem the lines $p$ and $q$ are parallel to each other.