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9. Which lines are parallel if mZ4=mZ5? Justify your answer.

9. Which lines are parallel if mZ4=mZ5? Justify your answer.-example-1
User Bryan Clark
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1 Answer

22 votes
22 votes

Answer:

r || s

Explanation:

m∠4 = m∠5 Given.

These angles are called alternate interior angles and because you are given that they are = then there are two parallel lines. The converse of the theorem stated. If alternate interior angles are cut by a transverse and two lines and the alternate interior angles are equal, then you have a pair of parallel lines.

User Nicke Manarin
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