Enter Octagon values
The perimeter of an octagon is 15
Calculate side, area
Calculate side:
s = 1.875
Calculate Area:
A = 2(1+√2)side2
A = 2(2.4142135623731)1.8752
A = 4.8284271247462(3.515625)
A = 16.974939110436
Calculate Sum of the Interior Angles:
Interior Angle Sum = (sides - 2) x 180°
Interior Angle Sum = (8 - 2) x 180°
Interior Angle Sum = 6 x 180°
Interior Angle sum = 1080°
Calculate polygon diagonals
Diagonals = 20
Calculate 1 vertex diagonals:
1 vertex Diagonals = n - 3
1 vertex Diagonals = 8 - 3
1 vertex Diagonals = 5
Calculate triangles from one vertex:
Triangles = N - 2
Triangles = 8 - 2
Triangles = 6
Other Properties:
Sides (Edges) = 8
Faces = 1
Vertices = 8
Final Answers
P = 15
s = 1.875
A = 16.974939110436
Interior Angle sum = 1080°
Diagonals = 20
1 vertex Diagonals = 5
Triangles = 6
Sides (Edges) = 8
Faces = 1
Vertices = 8
What is the Answer?
P = 15
s = 1.875
A = 16.974939110436
Interior Angle sum = 1080°
Diagonals = 20
1 vertex Diagonals = 5
Triangles = 6
Sides (Edges) = 8
Faces = 1
Vertices = 8
How does the Octagon Calculator work?
Free Octagon Calculator - Calculate side, area, and perimeter of an octagon based on inputs
This calculator has 1 input.
What 1 formula is used for the Octagon Calculator?
What 5 concepts are covered in the Octagon Calculator?
- area
- Number of square units covering the shape
- octagon
- An eight (8) sided polygon
P = 8s - perimeter
- The distance around a shape or object
- polygon
- A plane figure bounded by a set of straight lines
- side
- line segment joining two vertices in a polygon also known as an edge
Example calculations for the Octagon Calculator
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