Elementary Geometry for College Students (6th Edition)

Published by Brooks Cole
ISBN 10: 9781285195698
ISBN 13: 978-1-28519-569-8

Chapter 2 - Section 2.3 - Proving Lines Parallel - Exercises - Page 87: 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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