#### Answer

20 diagonals

#### Work Step by Step

D=$\frac{8(8-3)}{2}$
D=$\frac{40}{2}$
D=20

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Published by
Brooks Cole

ISBN 10:
9781285195698

ISBN 13:
978-1-28519-569-8

20 diagonals

D=$\frac{8(8-3)}{2}$
D=$\frac{40}{2}$
D=20

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