Question

In the given figure, ∠1 and ∠5 form a pair of ____ angles.

Answer 1

Here, the transversal $m$ intersects two lines $l_1$ and $l_2$.
Corresponding angles are the angles which are formed in matching corners or corresponding corners with the transversal when two lines are intersected by the transversal.

Hence, ∠1 and ∠5 form a pair of corresponding angles.