Question

which angle number represents an angle adjacent to ∠mrj?

Explanation:

Step1: Recall adjacent - angle definition

Adjacent angles share a common side and a common vertex and have no interior points in common.

Step2: Identify adjacent angle to ∠MRJ

∠MRJ has vertex R. Adjacent to it is ∠JRK which is labeled as ∠3.

Answer:

∠3