Best Answer

For a 9 sided polygon it is: 0.5*(92-(3*9)) = 27 diagonals

Q: What is the formula for the number of diagonals in a nonagon?

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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

Related questions

A Nonagon has 36 diagonals

24 diagonals

It has 27 diagonals

9 diagonals

27 diagonals

27

It can have.

Not in general.

27

It is: 0.5*(92-3*9) = 27 diagonals in a 9 sided nonagon

It has 27.

A nine sided nonagon has 27 diagonals