Question

The measure of an angle is 57°. What is the measure of its supplementary angle?

Answer 1

Answer:

123°

Step-by-step explanation:

Let the supplementary angle be x

x + 57° = 180°

x = 180° - 57°

x = 123°

I hope this will help you

Answer 2

Answer:

Measure of a supplementary angle

= 180°

The measure of an angle is 57°

• ∠1 + ∠2=180°

∠1=57°

∠2=x

x=180-57

x=123

So,your answer is;

• ∠1 + ∠2=180°

57°+123°=180°