English
Noun
triangular number (plural triangular numbers)
- (mathematics) Any integer that is the sum of n natural numbers from 1 to n.
Ten is a triangular number being the sum of 1, 2, 3, and 4.
Synonyms
Hyponyms
Translations
an integer which is the sum of n natural numbers
- Chinese:
- Mandarin: 三角形數 / 三角形数 (zh) (sānjiǎoxíngshù)
- Dutch: driehoeksgetal n
- Esperanto: triangula nombro
- Finnish: kolmioluku
- German: Dreieckszahl (de) f
- Hungarian: háromszögszám
- Italian: numero triangolare m
- Japanese: 三角数 (sankaku-sū)
- Latin: numerus triangularis m
- Polish: liczba trójkątna f
- Russian: треуго́льное число́ n (treugólʹnoje čisló)
- Spanish: número triangular m
- Tagalog: bilang na tatsihain
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