triangular number

English

Noun

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triangular number

Wikipedia

triangular number (plural triangular numbers)

1. (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

• triangle number

Hyponyms

• hexagonal number

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