Question

Angles A and B are supplementary.If mangle A= 78° what is mangle B?

Transformation properties
ANSWERED
asked 2020-11-27

Angles A and B are supplementary.
If \(\displaystyle{m}\angle{A}={78}°\) what is \({m}\angle{B}\)

Answers (1)

2020-11-28

The measures of supplementary angles add up to \(180^{\circ}\). So if \(\displaystyle{m}\angle{A}=78^{\circ}\), then the measure of angle B must be \(\displaystyle{m}\angle{B}=180^{\circ}-{m}\angle{A}={180}^{\circ}-{78}^{\circ}={102}^{\circ}\)

0
 
Best answer

expert advice

Need a better answer?
...