SOLUTION: If the alternate angles created by 2 parallel lines and a transversal are supplementary, what are their measures? Explain.
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Question 1174337: If the alternate angles created by 2 parallel lines and a transversal are supplementary, what are their measures? Explain.
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
They are 90% and the transversal is perpendicular to the parallel lines.
Alternate interior angles are equal but are also supplementary, so if each is x, x+x=180 and x=90 deg.
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