Answer:
∠5 and ∠1
Step-by-step explanation:
Complementary angles form a 90° angle. ∠5 and ∠1 form a right (90°) angle.
5 and 1
Complementary angles are two angles whose sum is 90°.
Or simpler way to explain: Two Angles are Complementary when they both add up to 90 degrees.
Hope this helps : )
