#### Answer

3240 degrees

#### Work Step by Step

We know that the sum of the interior angles is given by:
Sum=180∗(n−2)
Where n is the number of sides.
Thus, for the given problem, we have:
Sum=180∗(20−2)
3240

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Published by
Prentice Hall

ISBN 10:
0133281159

ISBN 13:
978-0-13328-115-6

3240 degrees

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