Korean edit

 
Korean Wikipedia has an article on:
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Etymology edit

Sino-Korean word from 九角形, from (nine) + (angle) + (shape).

Pronunciation edit

Romanizations
Revised Romanization?gugakhyeong
Revised Romanization (translit.)?gugaghyeong
McCune–Reischauer?kugakhyŏng
Yale Romanization?kwukak.hyeng

Noun edit

구각형 (gugakhyeong) (hanja 九角形)

  1. (geometry) nonagon