# Perimeter vs. Circumference

By Jaxson

## Main Difference

The main difference between Perimeter and Circumference is that the Perimeter is a path that surrounds an area and Circumference is a linear distance around the outside of a closed curve or circular object.

• Perimeter

A perimeter is a path that surrounds a two-dimensional shape. The term may be used either for the path or its lengthâ€”it can be thought of as the length of the outline of a shape. The perimeter of a circle or ellipse is called its circumference.

Calculating the perimeter has several practical applications. A calculated perimeter is the length of fence required to surround a yard or garden. The perimeter of a wheel (its circumference) describes how far it will roll in one revolution. Similarly, the amount of string wound around a spool is related to the spool’s perimeter.

• Circumference

In geometry, the circumference (from Latin circumferentia, meaning “carrying around”) of a circle is the (linear) distance around it. That is, the circumference would be the length of the circle if it were opened up and straightened out to a line segment. Since a circle is the edge (boundary) of a disk, circumference is a special case of perimeter. The perimeter is the length around any closed figure and is the term used for most figures excepting the circle and some circular-like figures such as ellipses.

Informally, “circumference” may also refer to the edge itself rather than to the length of the edge.

Wikipedia
• Perimeter (noun)

The sum of the distance of all the lengths of the sides of an object.

• Perimeter (noun)

The length of such a boundary.

• Perimeter (noun)

The outer limits of an area. circumference

• Perimeter (noun)

A fortified strip or boundary usually protecting a military position.

• Perimeter (noun)

An instrument for determining the extent and shape of the field of vision.

• Circumference (noun)

The line that bounds a circle or other two-dimensional figure

• Circumference (noun)

The length of such a line

• Circumference (noun)

The surface of a round or spherical object

• Circumference (noun)

The length of the longest cycle of a graph

• Circumference (verb)

To include in a circular space; to bound.

Wiktionary
• Perimeter (noun)

the continuous line forming the boundary of a closed geometrical figure

“the perimeter of a rectangle”

• Perimeter (noun)

the outermost parts or boundary of an area or object

“a perimeter fence”

“the perimeter of the garden”

• Perimeter (noun)

an area away from the basket, beyond the reach of the defensive team

“he was very patient in working the ball around the perimeter”

• Perimeter (noun)

an instrument for measuring the extent and characteristics of a person’s field of vision.

• Circumference (noun)

the enclosing boundary of a curved geometric figure, especially a circle.

• Circumference (noun)

the distance around something

“babies who have small head circumferences”

“a rope two inches in circumference”

Oxford Dictionary