# radius

> segment in a circle or sphere from its center to its perimeter or surface and its length

**Wikidata**: [Q173817](https://www.wikidata.org/wiki/Q173817)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Radius)  
**Source**: https://4ort.xyz/entity/radius


## References

1. [Source](https://github.com/JohnMarkOckerbloom/ftl/blob/master/data/wikimap)
2. [Source](https://lingualibre.org/wiki/Q803915)
3. Freebase Data Dumps. 2013
4. BabelNet
5. Quora
6. ISO 80000-3:2019 Quantities and units — Part 3: Space and time
7. ISO 80000-3:2006 Quantities and units — Part 3: Space and time
8. National Library of Israel