Ptolemy's inequality
Statement
In Euclidean geometry, Ptolemy's inequality relates the six distances determined by four points in the plane or in a higher-dimensional space. It states that, for any four points , , , and , the following inequality holds:
Further reading
- Wikipedia, page 7148302, revision 1342784682, Ptolemy's inequality. adopted
About this page
| Tag | KMB7KJJM6A |
|---|---|
| URI | m2://KMB7KJJM6A |
| Aliases | ptolemy-inequality |
| Kind | statement, proposition |
| Writing | W0 stub |
| Status | This copy of the site has no build data. Run m2 status KMB7KJJM6A. |
| Same as | |
| Changed | 4 November 2026 |
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