How to Calculate the Perimeter of a Polygon

Calculating the perimeter of a polygon (a closed plane figure bound by straight lines) is very easy. If you can calculate the distance between 2 points, you can find the perimeter of a polygon--or any two-dimensional shape. Just follow these simple steps.

Difficulty:

Moderately Easy

Instructions

Things You'll Need

• Polygon
• Calculator (if needed)

1. Measure the length of each side of the shape using the same unit of measurement.

2. Add all the lengths of each side together.

3. Write your answer using the same unit of measurement that you measured the shape with or an equivalent unit of measurement.

Tips & Warnings

• The perimeter of a shape or a polygon is the distance around the outside of the polygon.