Geometry: Common Core (15th Edition)

by Charles, Randall I.

Published by Prentice Hall

ISBN 10: 0133281159

ISBN 13: 978-0-13328-115-6

Chapter 1 - Tools of Geometry - 1-4 Measuring Angles - Got It? - Page 30: 3

Answer

$m\angle DEF=49$

Work Step by Step

The arc in each angle tells us that $\angle ABC$ and $\angle DEF$ are congruent. This means $m\angle ABC$ = $m\angle DEF=49$.

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