# Dupin indicatrix

> conic section which describes the local shape of a surface

**Wikidata**: [Q1231515](https://www.wikidata.org/wiki/Q1231515)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Dupin_indicatrix)  
**Source**: https://4ort.xyz/entity/dupin-indicatrix


## References

1. Freebase Data Dumps. 2013