Question

which angle number represents the linear pair of ∠mrj?

Explanation:

Step1: Recall linear - pair definition

Two angles are a linear pair if they are adjacent and their non - common sides form a straight line.

Step2: Identify adjacent angle to ∠MRJ

∠MRJ and ∠1 share a common side (ray RL) and their non - common sides (ray RJ and ray RK) form a straight line JK.

Answer:

∠1