Elementary Geometry for College Students (6th Edition)

Published by Brooks Cole
ISBN 10: 9781285195698
ISBN 13: 978-1-28519-569-8

Chapter 2 - Test - Page 119: 9b



Work Step by Step

I=$\frac{(n-2)180}{n}$ I=$\frac{(6-2)180}{6}$ I=$\frac{720}{6}$ I=120$^{\circ}$
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