Geometry: Common Core (15th Edition)

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

Chapter 2 - Reasoning and Proof - 2-5 Reasoning in Algebra and Geometry - Practice and Problem-Solving Exercises: 39

Answer

50

Work Step by Step

The two angles form a linear pair, so are supplemnetary. Their measures total 180. $130+x=180\longrightarrow$ subtract 130 from each side $x=50$
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