Which angle is complementary to 24°?

The angle that is complementary to 24° is 66°. Complementary angles are two angles that add up to 90°. To find the complementary angle, you can simply subtract 24° from 90°:

90° – 24° = 66°

So, whatever angle corresponds to 66° among the listed options (∠1, ∠2, ∠3, or ∠5) would be the correct answer. Make sure to identify which one matches 66°! If you need more help, feel free to ask.