It has 27 diagonals
9 diagonals
A nonagon has 9 sides and 9 angles.
A undecagon has 44 diagonals. A dodecagon has 54 diagonals. An octagon has 20 diagonals. A heptagon has 14 diagonals.
2 diagonals
24 diagonals
It has 27 diagonals
9 diagonals
27 diagonals
27
It is: 0.5*(92-3*9) = 27 diagonals in a 9 sided nonagon
A nine sided nonagon has 27 diagonals
There are 27 diagonals in a nonagon.
27
It can have.
A nanogon has no diagonals because there is no such shape. A nonagon, on the other hand, has 9*(9-3)/2 = 27 diagonals.
9 sides because a nonagon has 27 diagonals