Wikidata facts
- Subclass of
- figurate number
Show 3 more facts
- calculated from
- ordinal number
- maintained by WikiProject
- WikiProject Mathematics
- described by source
- Encyclopædia Britannica 11th edition
Sources (2)
via Wikidata · CC0
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Encyclopedic overview
In mathematics, a polygonal number is a number that counts dots arranged in the shape of a regular polygon. These are one type of 2-dimensional figurate numbers.
Polygonal numbers were first studied during the 6th century BC by the Ancient Greeks, who investigated and discussed properties of oblong, triangular, and square numbers.
Excerpted from Wikipedia’s “polygonal number” article, available under the CC BY-SA 4.0 licence.