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Dreieckszahl

Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.

German de: Etymology de :af Dreieck<t:triangle> -s- Zahl<t:number> de Dreieck -s- Zahl triangle number Pronunciation de /ˈdʁaɪ̯.ɛksˌtsaːl/ de Drei ecks zahl de De-Dreieckszahl.ogg <<Germany>> (<<Berlin>>) Noun f triangular number, triangle number Declension f Hypernyms de figurierte Zahl Related terms de Sechseckszahl