im gonna think you mean a nonagon
Any quadrilateral (4-sided shape) has 2 diagonals.
A six sided hexagon has nine diagonals.
35 diagonals
There are 54 diagonals in a 12 sided shape
There is none. A 5 sided shape is a pentagon but that has 10 diagonals, not 2.
Any quadrilateral (4-sided shape) has 2 diagonals.
A six sided hexagon has nine diagonals.
35 diagonals
There are 54 diagonals in a 12 sided shape
There is none. A 5 sided shape is a pentagon but that has 10 diagonals, not 2.
A convex shape.
Nine
Nine.
octagon
square
triangle
There are 275 diagonals in a shape with 25 sides. The formula is n*(n-3)/2