Answer
Line l and n must be parallel.
Work Step by Step
Lines l and n are parallel because the corresponding angles 7 and 11 are congruent.
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 2.3 - Proving Lines Parallel - Exercises - Page 91: 10
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