# Brianchon's theorem

> theorem that the three long diagonals of a hexagon that is tangent to a conic section meet in a single point

**Wikidata**: [Q119450](https://www.wikidata.org/wiki/Q119450)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Brianchon's_theorem)  
**Source**: https://4ort.xyz/entity/brianchon-s-theorem


## References

1. Freebase Data Dumps. 2013