l
The Perimeter of a nonagon is 2
Calculate side, area
s = | P |
9 |
s = | 2 |
9 |
s = 0.22222222222222
A = 9/4s2cot(180°/9)
A = 9/4(0.22222222222222)2cot(20)
A = 9/4(0.049382716049383)cot(20)
A = 0.11111111111111 x 2.7474774228644
A = 0.30527526920715
Interior Angle Sum = (sides - 2) x 180°
Interior Angle Sum = (9 - 2) x 180°
Interior Angle Sum = 7 x 180°
Interior Angle sum = 1260°
Diagonals = | n(n - 3) |
2 |
Diagonals = | 9(9 - 3) |
2 |
Diagonals = | 9(6) |
2 |
Diagonals = | 54 |
2 |
Diagonals = 27
1 vertex Diagonals = n - 3
1 vertex Diagonals = 9 - 3
1 vertex Diagonals = 6
Triangles = N - 2
Triangles = 9 - 2
Triangles = 7
Sides (Edges) = 9
Faces = 1
Vertices = 9