Answer
m$\angle$C=90$^{\circ}$
Work Step by Step
m$\angle$C=$\frac{360}{n}$
m$\angle$C=$\frac{360}{4}$
m$\angle$C=90$^{\circ}$
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 7 - Section 7.3 - More about Regular Polygons - Exercises - Page 343: 17b
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