Question

which angle is supplementary to ∠4?

Explanation:

Step1: Recall supplementary - angle definition

Two angles are supplementary if their sum is 180 degrees. Adjacent angles that form a straight - line are supplementary.

Step2: Identify the angle adjacent to ∠4

∠4 and ∠6 form a straight - line. So, ∠4+∠6 = 180 degrees.

Answer:

∠6