Circumference

The circumference (from Latin circumferentia, meaning "carrying around") of a closed curve or circular object is the linear distance around its edge.

Description

The circumference of a circle is of special importance in geometry and trigonometry.

Informally "circumference" may also refer to the edge itself rather than to the length of the edge.

Circumference is a special case of perimeter: the perimeter is the length around any closed figure, but conventionally "perimeter" is typically used in reference to a polygon while "circumference" typically refers to a continuously differentiable curve.

See also

• Arclength
• Area
• Caccioppoli set
• Circle
• Diameter
• Geometry
• Isoperimetric inequality
• Pythagorean Theorem
• Radius
• Volume

External links

• Circumference @ Wikipedia