Perimeter of an Equilateral Triangle

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Drawing the perimeter of an equilateral triangle

The equilateral triangle has all three sides equal, so its perimeter will be three times the length of one of its sides (a).

Formula of the perimeter of an equilateral triangle

Download this calculator to get the results of the formulas on this page. Choose the initial data and enter it in the upper left box. For results, press ENTER.

Triangle-total.rar         or   Triangle-total.exe      

Note. Courtesy of the author: José María Pareja Marcano. Chemist. Seville, Spain.


Drawing of the equilateral triangle example 1 for perimeter calculation.

Being a equilateral triangle with all sides equal in length a=5 cm.

What is its perimeter?

Applying the above formula:

Example of the perimeter of an equilateral triangle.

We obtain that the perimeter of this equilateral triangle is 15 cm.

AUTHOR: Bernat Requena Serra

YEAR: 2018


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