# User Friendly Perimeter Of An Equilateral Triangle Calculator

## How To Find The **Perimeter Of An Equilateral Triangle**

Let's look at the geometric characteristics of an equilateral triangle. But first please review the definition of Perimeter Of Shapes (Two-Dimensional).

- An equilateral triangle has two unique features.
- The first unique feature - all three sides of the triangle
are exactly the same length. In this example sides
**A**are of equal length. - The second unique feature of an equilateral triangle are the interior angles are exactly 60°. The sum of the interior angles is 180°.
- Special note, all sides of an Equilateral Triangle must be greater than zero.

**Perimeter Of An Equilateral Triangle Formula**

Formula = Side A + Side A + Side A =

Formula = A + A + A =

Formula = 3 × A