# seven circles theorem

> about a chain of six circles tangent to a seventh circle and each to its 2 neighbors

**Wikidata**: [Q7457534](https://www.wikidata.org/wiki/Q7457534)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Seven_circles_theorem)  
**Source**: https://4ort.xyz/entity/seven-circles-theorem