Elementary Geometry for College Students (5th Edition)

Published by Brooks Cole
ISBN 10: 1439047901
ISBN 13: 978-1-43904-790-3

Chapter 2 - Section 2.3 - Proving Lines Parallel - Exercises - Page 91: 2

Answer

Line l must be parallel to line m.

Work Step by Step

Lines l and m are parallel because the alternate exterior angles 2 and 7 are congruent.
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