Question

which angle number represents the linear pair of ∠mrj?

Explanation:

Step1: Recall linear - pair definition

A linear pair of angles is a pair of adjacent angles formed when two lines intersect. The sum of angles in a linear pair is 180 degrees.

Step2: Identify adjacent angle to ∠MRJ

∠MRJ and ∠MRK share a common side (ray MR) and a common vertex (point R), and they are adjacent. Also, they form a straight - line JK. So, ∠MRK is the linear pair of ∠MRJ. In the given figure, ∠MRK is represented by angle number 2.

Answer:

2