Question

∠1 and ∠2 are supplementary angles. If m∠1 = 77°, then m∠2 =

Question 4 options:

A)

77°.

B)

103°.

C)

167°.

D)

13°.

Answer 1

B. 103°

Explanation:

Supplementary angles add up to 180°, so we can find the measure of angle 2 by subtracting 77 from 180

180 - 77

= 103

So, m∠2 is 103°