Elementary Geometry for College Students (5th Edition)

Published by Brooks Cole
ISBN 10: 1439047901
ISBN 13: 978-1-43904-790-3

Chapter 6 - Section 6.1 - Circles and Related Segments and Angles - Exercises: 10c

Answer

180$^{\circ}$

Work Step by Step

Arc STR is a semicircle so its measure is 180$^{\circ}$.
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