Answer:
b = 112°
Explanation:
The two angles from a straight line. so, they add to 180° .
b + 68° = 180°
subtract 68° from each side
b + 68° - 68° = 180° - 68°
B=112
Angle B is on the same line as angle A(68). They would need to combine for a total of 180 degrees. So 68-180=112
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