Question

which angle is complementary to ∠2?

Explanation:

Step1: Recall complementary angles definition

Two angles are complementary if their sum is 90 degrees.

Step2: Analyze the angle - relationship

From the figure, we can see that ∠2 and ∠3 together form a right - angle (since ∠3 is marked as a right - angle). So, ∠2+∠3 = 90°.

Answer:

∠3