Decagon perimeter = 7

May 2024 · 2 minute read
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Enter Decagon Info Below

The perimeter of an decagon is 7

Calculate side, area

Calculate side:
s  =  P
  10

s  =  7
  10

s = 0.7

Calculate Area:

A = 5/2s2√5 + 2√5

A = 2.5(0.7)2(3.0776835371753)

A = 2.5(0.49)(3.0776835371753)

A = 3.7701623330397

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

P = 7
A = 3.7701623330397
Sides (Edges) = 10
Faces = 1
Vertices = 10


What is the Answer?

P = 7
A = 3.7701623330397
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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