# quadric surface

> locus of zeros of a quadratic polynomial in a three-dimensional space (affine or projective, not necessarily real)

**Wikidata**: [Q21651861](https://www.wikidata.org/wiki/Q21651861)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Quadric_surface)  
**Source**: https://4ort.xyz/entity/quadric-surface