Geometry: Common Core (15th Edition)

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

Chapter 1 - Tools of Geometry - 1-4 Measuring Angles - Practice and Problem-Solving Exercises - Page 32: 33



Work Step by Step

A clock is divided into 12 sections. The clock face is a circle, so it totals $360^o$. Each hour is therefore $360^o\div12=30^o$ Multiply the hour by $30^o$ to find the angle. $6\times30=180$
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