Geometry: Common Core (15th Edition)

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

Chapter 10 - Area - 10-6 Circles and Arcs - Practice and Problem-Solving Exercises - Page 654: 13

Answer

$m\widehat{TBD}=180^{\circ}$

Work Step by Step

We must know that the measure of a semi-circle arc is equal to $180^{\circ}$ In the given question, we can see that $\widehat{TBD}$ is a semicircle. This implies that $m\widehat{TBD}=180^{\circ}$
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