Heptagon perimeter = 14

The of an heptagon is

The perimeter of an heptagon is 14. Calculate side, area

Calculate side:
s =P
7

s =14
7

s = 2

Calculate Area:
A = 7/4s2cot(180°/7)
A = 7/4(2)2cot(25.)
A = 7/4(4)cot(25.)
A = 7 x 2.4
A = 14.

Calculate Sum of the Interior Angles:
Interior Angle Sum = (sides - 2) x 180°
Interior Angle Sum = (7 - 2) x 180°
Interior Angle Sum = 5 x 180°
Interior Angle sum = 900°

Calculate the number of diagonals of the polygon:
Diagonals =n(n - 3)
2

Diagonals =7(7 - 3)
2

Diagonals =7(4)
2

Diagonals =28
2

Diagonals = 14

Calculate the number of diagonals from one vertex:
1 vertex Diagonals = n - 3
1 vertex Diagonals = 7 - 3
1 vertex Diagonals = 4

Calculate the number of triangles that can be drawn from one vertex:
Triangles = N - 2
Triangles = 7 - 2
Triangles = 5