A) 9
B) 10
C) 11
D) 12
Correct Answer: A
Solution :
[a] Number of diagonals of polygon \[=\,\,\frac{n\,(n-3)}{2}\] \[27=\frac{n\,(n-3)}{2}\]\[\Rightarrow \]\[n\,(n-3)=54\] \[\therefore \] \[n=9\]You need to login to perform this action.
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