If angleA and angleB are supplementary angles, and angleA = 63°, find the measure of angleB. A. B = 27° B. B = 63° C. B = 117° D

Question

4 years ago

14

. B = 153°

2 answers:

valkas [14] · Answer 1 · 2021-11-15T12:22:45+03:00

4 0

C. B = 117° because 63°+117°=180°

Alenkasestr [34] · Answer 2 · 2021-11-15T13:36:14+03:00

4 0

Answer: C. B=117°.

Step-by-step explanation:

We know that if a pair of angle are supplementary then their sum is added up to 180 degrees.

Given : angle A and angle B are supplementary angles.

i.e $\angle{A}+\angle{B}=180^{\circ}$

Also, angle A = 63°

i.e $63^{\circ}+\angle{B}=180^{\circ}$

i.e $\angle{B}=180^{\circ}-63^{\circ}$

i.e $\angl{B}=117^{\circ}$

Hence, the measure of angleB is 117°.