Formula Index
# Perimeter of a Decagram Formulas & Calculator

## Formula Knowing the Side

### Where:

## Decagram Definition

## Perimeter Definition

## Formula Definition

The perimeter of a decagram can be calculated using the following formula: if you know the length of a side.

If you know the length of one of the sides of the decagram, you can calculate its perimeter using the following formula:

$$"perimeter" = S * 20$$

$$20 = "number of sides in a decagram"$$

$$S = "side"$$

A decagram is a geometric shape or polygon with 10 points and 20 sides. It also has 10 angles and 10 vertices. The decagram can be regular or irregular.

A regular decagram has all 20 sides of equal length and equal distance from the center. It looks very symmetrical. All regular decagrams look the same.

An irregular decagram on the other hand can have sides of different shapes and angles. There is a virtually infinite amount of variations for an irregular decagram, so that they can all look very different from each other. Despite these differences, they will always have 20 sides and 10 points.

A perimeter is defined by the outer path of a shape. The shape is always in 2 dimensions. The perimeter is the total length of the exterior path. Another way of looking at this is to think of it as the boundary length of a shape.

In the case of a circle, the perimeter is called a circumference.

Perimeter has a Greek origin, "peri" means "around", and "meter" means "measure". So perimeter means "measure around".

It is a representation of a rule or a general principle using letters. *( Algebra, A. Baldor)*

When describing formulas in plural, it is also valid to say "formulae".

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