Angles A and B are supplementary. Angle A has a measure of 80 degrees. What is the measure of angle B?
2 answers:
Answer: 100
Step-by-step explanation:
just did it
Supplementary angles, when added, equal 180 degrees
so < A + < B = 180...and if < A = 80
80 + < B = 180
< B = 180 - 80
< B = 100 <==
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