A polygon has 27 diagonals.how many sides does it have?
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(n-2×exteroir angle)/90
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diagonals=n(n+3)/2
27=n^2+3n/2
27×2=n^2+3n
54=n^2+3n
n=6 on solving
plz mark it brainlist
27=n^2+3n/2
27×2=n^2+3n
54=n^2+3n
n=6 on solving
plz mark it brainlist
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