Question

which angle number represents an angle vertical to ∠lrk?

Explanation:

Step1: Recall vertical - angle definition

Vertical angles are formed when two lines intersect. They are opposite each other and are congruent.

Step2: Identify vertical angle to ∠LRK

The angle vertical to ∠LRK is ∠MSN. In terms of the numbered angles, ∠LRK and ∠4 are vertical angles.

Answer:

4