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 209: 27

Answer

x=30

Work Step by Step

Using the fact that triangles add to 180 degrees, we find: $x+2x+3x=180\\ 6x=180\\ x=30$
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