SOLUTION: If the number of diagonals of a polygon is 170, how many sides does it have? Explain how you find this answer on a calculator.

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Question 323668: If the number of diagonals of a polygon is 170, how many sides does it have? Explain how you find this answer on a calculator.
Answer by solver91311(24713) About Me  (Show Source):
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The formula for the number of diagonals in a polygon given the number of sides is:



so for 170 diagonals, solve the equation:



to determine , the number of sides.

John