# Perimeter Of Equilateral Triangle Calculator

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

Perimeter = Side A + Side A + Side A =

Perimeter = A + A + A =

Perimeter = 3 × A =

**ALTERNATIVE FORMULA TO COMPUTE PERIMETER:**

Perimeter = Side A + Side B + Side C
=

Perimeter = A + B + C