De or het decaëder?

The correct Dutch article is:

de decaëder

  • Plural: de decaëders
  • Diminutive: het decaëdertje
Meaning (Dutch) regelmatig tienvlak

How to use decaëder

the decaëderde decaëder
this decaëderdeze decaëder
that decaëderdie decaëder
our decaëderonze decaëder
your decaëderjouw decaëder
every decaëderelke decaëder
which decaëder?welke decaëder?
a big decaëder / the big decaëdereen grote decaëder, de grote decaëder
the decaëder (plural)de decaëders, deze decaëders

Dutch words ending in decaëder

dodecaëder

In compound words, the last part decides the article. See the rule

Meaning, plural, diminutive, pronunciation and translations: WikiWoordenboek (Dutch Wiktionary) (CC BY-SA 4.0). Example sentences: Tatoeba (CC BY 2.0 FR).