Question

which angle number represents the linear pair of ∠sxt?

Explanation:

Step1: Recall linear - pair definition

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

Step2: Identify adjacent angle to ∠SXT

∠SXT and ∠RXS are adjacent angles and their non - common sides (ray XT and ray XR) form a straight line.

Answer:

∠RXS (assuming angle 3 is ∠RXS based on the standard naming convention for angles formed by intersecting lines in the given figure)