Geometry: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281159
ISBN 13: 978-0-13328-115-6

Chapter 3 - Parallel and Perpendicular Lines - Chapter Review - Page 208: 16

Answer

x = 20 degrees

Work Step by Step

If line l and line m are parallel, then the measures of the angles described are equal. In other words: $3x+5 = 65\\ 3x = 60\\ x = 20^{\circ} $
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