2 years ago

What is the measure of angle B in degrees

Mathematics

1 answer:

Hunter-Best [27]2 years ago

8 0

Angle C and the 112 degree angle are supplementary, so angle C measures 180-112=68 degrees.

This means that by the exterior angle theorem, $m\angle B=51^{\circ}+68^{\circ}=\boxed{119^{\circ}}$

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