Question

which angle is supplementary to ∠6?

Explanation:

Step1: Recall supplementary - angle definition

Two angles are supplementary if their sum is 180 degrees. In a linear - pair of angles, the angles are supplementary.

Step2: Identify linear - pair with ∠6

∠6 and ∠4 form a linear pair. So, ∠4+∠6 = 180 degrees.

Answer:

∠4