Created by Seizefire Edit

Made in March 19, 2016 A.D.

Perimeter is the distance around a polygon. To find perimeter, you need to find the lengths of all the sides, then add the lengths together.


For this square, the lengths are all 1 cm. So you add all the lengths together and ta-da, 4 cm. But there are more ways to find perimeter below.

P = Perimeter | L = length | W = width

For Rectangles: P = 2L + 2W

For Squares: P = 4L

For Equilateral Triangle: P = 3S

For Isosceles Triangle: P = 2L + W

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