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 $m\angle ABC$ = $m\angle DEF=49$.
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
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