Question

which angle is complementary to ∠2?

Explanation:

Step1: Recall complementary angles definition

Complementary angles add up to 90°. In the given figure, since ∠3 is a right - angle (90°) and ∠1 + ∠2=∠3.

Step2: Determine complementary angle

So, ∠1 and ∠2 are complementary.

Answer:

∠1