Find the magnitude of the angle B. Please answer fast I have exam tomorrow. please answer with explanation and the answer will be definitely marked as brainliest
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180- 140=40
A + B+C=180
70+B +40=180
B= 180-110
B= 70
A + B+C=180
70+B +40=180
B= 180-110
B= 70
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Angle A + Angle B = angle C ( the magnitude of an angle outside a triangle is equal to the sum of the opposite angles or remote angles )
70°+ Angle B = 140°
Angle B = 140°-70°=70°
70°+ Angle B = 140°
Angle B = 140°-70°=70°
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