Perimeter

usgb/pəˈrɪmɪtər/
noun

The total length of the outside edges of a shape or an area.

He measured the perimeter of the square to be 16 meters.
Visual representation of "perimeter" - The total length of the outside edges of a shape or an area.

Often appears as...

  • measure the perimeter
  • perimeter of a square
Definition 1 of 2
Visual representation of "perimeter"
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Geometry Context

Perimeter is a basic term in geometry often used in mathematics education.

Illustration for Geometry Context
Find the perimeter of this triangle.
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Linear Measure

Perimeter refers to a one-dimensional measure, even if the shape is two-dimensional.

Illustration for Linear Measure
The perimeter of our garden is longer than yours.
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Addition of Sides

It's the sum of all side lengths of a polygon, not just a measure of one side.

Illustration for Addition of Sides
To get the perimeter, add all the sides of the quadrilateral.
Visual representation of the word "Perimeter"

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