Elementary Geometry for College Students (5th Edition)

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

Chapter 7 - Section 7.3 - More about Regular Polygons - Exercises - Page 344: 21d

Answer

90$^{\circ}$

Work Step by Step

The central angles and exterior angles of a regular polygon are congruent. n=$\frac{360}{90}$ n=4 I=$\frac{180(4-2)}{4}$ I=45(2) I=90$^{\circ}$
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