Question

Identify which of the following pairs of angles are supplementary.

( 1 )
A) 70°, 20°

B) 74°, 16°

C) 123°, 57°

D) 40°, 50°

Answer 1

Answer:

c) 123°,57°

Step-by-step explanation:

because two angles are supplementary angle if their sum is 180°

123°+57°=180°

hence it is a supplementary angle