Question

which angle is supplementary to ∠3? ∠4 ∠8 ∠1 ∠5

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 adjacent angle to ∠3

∠4 is adjacent to ∠3 and they form a straight - line. So, ∠3+∠4 = 180°.

Answer:

∠4