Elementary Geometry for College Students (5th Edition)

by Alexander, Daniel C.; Koeberlein, Geralyn M.

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 - Page 287: 27

Answer

72$^{\circ}$

Work Step by Step

The blades form a circle around the light, which is 360$^{\circ}$. Two consecutive blades form an angle that is one fifth of the total circle. Therefore the angle has a measure of 360/5=72$^{\circ}$.

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