If a polygon had 275diagonals, how many sides must it have?

asked May 4, 2023 145k views

23 votes

If a polygon had 275diagonals, how many sides
must it have?

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11 votes

Answer:

25 sides

Explanation:

Number of diagonals = n(n-1)/2 where n is the number of sides.

Therefore,

n(n-1)/2 = 275

n = 25

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