

Definition:
The total distance around the outside of a
square
Try this
Drag any orange dot to resize the square. The perimeter is calculated as you drag.
How to find the perimeter of a square
Like any polygon, the perimeter is the total distance around the outside,
which can be found by adding together the length of each side.
I the case of a square, all four sides are the same length,
so the perimeter is four times the length of a side. Or as a formula:
perimeter = 4S

where:
S is the length of any one side


In the figure above, drag any orange dot to resize the square. From the side length shown, calculate the perimeter
and verify your result matches the formula at the top of the diagram.
Calculator
Use the calculator on the right to calculate the properties of a square.
Enter any one value and the other three will be calculated. For example, enter the side length and the perimeter will be calculated.
Similarly, if you enter the area, the side length needed to get that area will be calculated.
Coordinate Geometry
If you know the
coordinates
of the
vertices
of a square, you can calculate all the other properties, including the perimeter.
For more on this, see
Area and Perimeter of a square (Coordinate geometry)
Other polygon topics
General
Types of polygon
Area of various polygon types
Perimeter of various polygon types
Angles associated with polygons
Named polygons
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