Answer
5 diagonals
Work Step by Step
D=$\frac{n(n-3)}{2}$
D=$\frac{5(5-3)}{2}$
D=$\frac{10}{2}$
D=5
Elementary Geometry for College Students (6th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
Published by
Brooks Cole
ISBN 10:
9781285195698
ISBN 13:
978-1-28519-569-8
Chapter 2 - Section 2.5 - Convex Polygons - Exercises - Page 100: 5a
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