# circumference

### Geometry

The distance around a circle, or around a great circle of a sphere.

### Graph Theory

The circumference of a graph is the length of its longest cycle, if any.

- [MLA] “circumference.”
*Platonic Realms Interactive Mathematics Encyclopedia.*Platonic Realms, 24 Mar 2013. Web. 24 Mar 2013. <http://platonicrealms.com/> - [APA] circumference (24 Mar 2013). Retrieved 24 Mar 2013 from the
*Platonic Realms Interactive Mathematics Encyclopedia:*http://platonicrealms.com/encyclopedia/circumference/