Question

which angles are supplementary to each other? ∠8 and ∠5 ∠1 and ∠6 ∠8 and ∠14 ∠9 and ∠16

Explanation:

Step1: Recall supplementary - angle definition

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

Step2: Analyze each option

∠8 and ∠5 are vertical angles (not supplementary). ∠1 and ∠6 are not related in a way to be supplementary. ∠8 and ∠14 are adjacent and form a straight - line, so they are supplementary. ∠9 and ∠16 are not supplementary.

Answer:

∠8 and ∠14