German edit

German numbers (edit)
 ←  10  ←  19 20 21  →  30  → 
    Cardinal: zwanzig
    Ordinal: zwanzigste
    Sequence adverb: zwanzigstens
    Ordinal abbreviation: 20.
    Adverbial: zwanzigmal
    Adverbial abbreviation: 20-mal
    Multiplier: zwanzigfach
    Multiplier abbreviation: 20-fach
    Fractional: Zwanzigstel
    Polygon: Zwanzigeck
    Polygon abbreviation: 20-Eck
    Polygonal adjective: zwanzigeckig
    Polygonal adjective abbreviation: 20-eckig

Noun edit

20-Eck n (strong, genitive 20-Eckes or 20-Ecks, plural 20-Ecke)

  1. Alternative spelling of Zwanzigeck