Answer
$I = 108^{\circ}$
Work Step by Step
We can find the measure of the obtuse angles in the regular polygon with 5 sides:
$I = \frac{(n-2)~180^{\circ}}{n}$
$I = \frac{(5-2)~180^{\circ}}{5}$
$I = \frac{(3)~180^{\circ}}{5}$
$I = 108^{\circ}$
Elementary Geometry for College Students (7th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
Published by
Cengage
ISBN 10:
978-1-337-61408-5
ISBN 13:
978-1-33761-408-5
Chapter 2 - Section 2.5 - Convex Polygons - Exercises - Page 115: 22
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