# De Bruijn–Erdős theorem

> incidence geometry theorem

**Wikidata**: [Q3527056](https://www.wikidata.org/wiki/Q3527056)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/De_Bruijn–Erdős_theorem_(incidence_geometry))  
**Source**: https://4ort.xyz/entity/de-bruijn-erd-s-theorem


## References

1. Freebase Data Dumps. 2013