If ∠A and ∠B are supplementary angles and ∠A

is three times as large as ∠B, find the measures

of ∠A and ∠B.

Angle A = 135 degrees and Angle B = 45 degrees

Step-by-step explanation:

Supplementary means two angles added together to make 180.

Angle A = 3x and Angle B = x

So 3x + x = 180

4x=180 divide both sides by 4

x = 45

So Angle A = 3 times 45 = 135 degrees

Angle B = the value of x which is 45 degrees