Concept information
Preferred term
Ptolemy's inequality
Definition
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In Euclidean geometry, Ptolemy's inequality relates the six distances determined by four points in the plane or in a higher-dimensional space.
(Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Ptolemy%27s_inequality)
Broader concept
In other languages
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French
URI
http://data.loterre.fr/ark:/67375/PSR-F40B1CCW-5
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