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 Test - Page 211: 1

Answer

x=22 degrees

Work Step by Step

We know that the sum of the angles of a triangle are 180 degrees. We will call the unknown angle x. This gives: $x+57+101=180\\ 158+x=180$ x=22 degrees
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