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 92: 23

Answer

x=20

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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