Answer
1. If and only if alternate interior angles are congruent, the lines are parallel.
2. Thus, is alternate interior angles are not congruent, then the line is not parallel.
Work Step by Step
Answer is above.
Elementary Geometry for College Students (5th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
Published by
Brooks Cole
ISBN 10:
1439047901
ISBN 13:
978-1-43904-790-3
Chapter 2 - Section 2.2 - Indirect Proof - Exercises - Page 85: 25
Update this answer!
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.
