Geometry: Common Core (15th Edition)

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

Chapter 2 - Reasoning and Proof - Get Ready! - Page 79: 16

Answer

$\angle1$ and $\angle2$

Work Step by Step

Supplementary angles are two angles whose measures total 180. Adjacent angles that are supplementary are a linear pair. $\angle1$ and $\angle2$ are not a linear pair, but are adjacent because they share a vertex and a common side.
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