Answer
$m\angle O=46^{\circ}$
Work Step by Step
In a circle, the central angle $(\angle O)$ equals the measure of its intercepted arc. Therefore, measure of arc $DE =m\angle O=46^{\circ}$.
Elementary Geometry for College Students (7th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
Published by
Cengage
ISBN 10:
978-1-337-61408-5
ISBN 13:
978-1-33761-408-5
Chapter 6 - Section 6.1 - Circles and Related Segments and Angles - Exercises - Page 285: 2
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