Elementary Geometry for College Students (7th Edition)

Published by Cengage
ISBN 10: 978-1-337-61408-5
ISBN 13: 978-1-33761-408-5

Chapter 2 - Section 2.3 - Proving Lines Parallel - Exercises - Page 101: 23



Work Step by Step

Angles 4 and 5 are alternate interior angles so they are congruent. m$\angle$4=m$\angle$5 5x=4(x+5) 5x=4x+20 x=20
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