Decagon side = 12

Decagon side = 12

Enter Decagon Info Below

The side of an decagon is 12

Calculate perimeter, area

Calculate Perimeter:

P = 10 x side

P = 10 x 12

P = 120

Calculate Area:

A = 5/2s2√5 + 2√5

A = 2.5(12)2(3.0776835371753)

A = 2.5(144)(3.0776835371753)

A = 1107.9660733831

Calculate Sum of the Interior Angles:

Interior Angle Sum = (sides - 2) x 180°

Interior Angle Sum = (10 - 2) x 180°

Interior Angle Sum = 8 x 180°

Interior Angle sum = 1440°

Calculate decagon diagonals

Diagonals  =	n(n - 3)
	2

Diagonals  =	10(10 - 3)
	2

Diagonals  =	10(7)
	2

Diagonals  =	70
	2

Diagonals = 35

Calculate diagonals from 1 vertex:

1 vertex Diagonals = n - 3

1 vertex Diagonals = 10 - 3

1 vertex Diagonals = 7

Calculate number of Δ from 1 vertex:

Triangles = N - 2

Triangles = 10 - 2

Triangles = 8

Other Properties:

Sides (Edges) = 10

Faces = 1

Vertices = 10

s = 12
P = 120
A = 1107.9660733831
Sides (Edges) = 10
Faces = 1
Vertices = 10

You have 1 free calculations remaining

What is the Answer?

s = 12
P = 120
A = 1107.9660733831
Sides (Edges) = 10
Faces = 1
Vertices = 10

How does the Decagon Calculator work?

Free Decagon Calculator - Solves for the side, perimeter, and area of a decagon.
This calculator has 1 input.

What 1 formula is used for the Decagon Calculator?

What 4 concepts are covered in the Decagon Calculator?

areaNumber of square units covering the shapedecagon10 sided polygon or 10-gonperimeterThe distance around a shape or objectsideline segment joining two vertices in a polygon also known as an edge

Example calculations for the Decagon Calculator

Decagon Calculator Video

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