3 years ago

Find m Help, I really don't understand this

Mathematics

2 answers:

Irina18 [472]3 years ago

3 0

$m\angle B=m\angle C\\
m\angle C=180-100=80 \Rightarrow m\angle B=80$

zhuklara [117]3 years ago

3 0

Measure of angle B is 80
since angle C makes a line with the angle outside C is 80 and since the sides opposite to the angles are congruent so are the angles

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