Meaning & use
perimeter
The total distance around the boundary of a flat shape.
See it in a sentence
The square has sides of 4 centimeters and a perimeter of 16 centimeters.
Add all the side lengths to find the garden's perimeter.
A note on using this word
Perimeter measures length around a shape; area measures the space inside it. A circle's perimeter is called its circumference.
Words with a similar meaning
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