File:Ptolemy_equality.svg · Wikimedia Commons · See Wikimedia Commons
Wikidata facts
- Instance of
- theorem
- Subclass of
- Casey’s theorem
- Part of
- list of theorems
- Named after
- Ptolemy
Show 6 more facts
- statement describes
- cyclic quadrilateral
- publication date
- 0100-00-00
- Commons category
- Ptolemy's theorem
- copyright status
- public domain
- maintained by WikiProject
- WikiProject Mathematics
- studied by
- Euclidean geometry
Sources (1)
via Wikidata · CC0
~30 min read
Encyclopedic overview
Ptolemy's theorem is a relation among these lengths in a cyclic quadrilateral.
A C
Excerpted from Wikipedia’s “Ptolemy's theorem” article, available under the CC BY-SA 4.0 licence.