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Two parallel lines are cut by a transversal. Angles A and B are adjacent exterior angles. Angle A measures 87 degrees. What does Angle B measure?

• Mathematics (Help? Please. ) -

Angle A + angle B must add up to 180°
so if angle A = 87°, then ....

• Mathematics (Help? Please. ) -

B= 180 - 87
B= 93 degrees.. :)

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