For a 9 sided polygon it is: 0.5*(92-(3*9)) = 27 diagonals
27 diagonals
It can have.
27
It is: 0.5*(92-3*9) = 27 diagonals in a 9 sided nonagon
A nine sided nonagon has 27 diagonals
A Nonagon has 36 diagonals
24 diagonals
It has 27 diagonals
9 diagonals
27 diagonals
27
It can have.
27
Not in general.
It is: 0.5*(92-3*9) = 27 diagonals in a 9 sided nonagon
It has 27.
A nine sided nonagon has 27 diagonals