# horizontal plane

> plane perpendicular to the gradient of the gravity field

**Wikidata**: [Q1055798](https://www.wikidata.org/wiki/Q1055798)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Horizontal_plane)  
**Source**: https://4ort.xyz/entity/horizontal-plane


## References

1. Freebase Data Dumps. 2013
2. [Source](http://vocabulary.curriculum.edu.au/scot/12236)