# circles of Apollonius

> a family of circles where every one intersects every circle in a second family of circles orthogonally

**Wikidata**: [Q773862](https://www.wikidata.org/wiki/Q773862)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Apollonian_circles)  
**Source**: https://4ort.xyz/entity/circles-of-apollonius


## References

1. Freebase Data Dumps. 2013