Question

which angle is complementary to ∠4? 3 4 5 2 1 6 ∠5 ∠6 ∠1 ∠3

Explanation:

Step1: Recall complementary - angle definition

Two angles are complementary if their sum is 90 degrees.

Step2: Identify right - angle in the figure

We see that ∠3 and ∠4 form a right - angle (marked with a square corner), so ∠3+∠4 = 90°.

Answer:

∠3