Achtzehneck

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German[edit]

German numbers (edit)
 ←  17 18 19  → 
    Cardinal: achtzehn
    Ordinal: achtzehnte
    Sequence adverb: achtzehntens
    Ordinal abbreviation: 18.
    Adverbial: achtzehnmal
    Adverbial abbreviation: 18-mal
    Multiplier: achtzehnfach
    Multiplier abbreviation: 18-fach
    Fractional: Achtzehntel
    Polygon: Achtzehneck
    Polygon abbreviation: 18-Eck
    Polygonal adjective: achtzehneckig
    Polygonal adjective abbreviation: 18-eckig
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Alternative forms[edit]

Etymology[edit]

From achtzehn +‎ Ecke.

Pronunciation[edit]

  • IPA(key): /ˈaxtseːnˌ.ɛk/
  • Hyphenation: Acht‧zehn‧eck

Noun[edit]

Achtzehneck n (strong, genitive Achtzehneckes or Achtzehnecks, plural Achtzehnecke)

  1. octadecagon
    Synonym: Oktodekagon
    ein regelmäßiges Achtzehnecka regular octadecagon

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