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单词 nonagon
释义

non·a·gon

noun
/ˈnɒnəɡən/
/ˈnɑːnəɡɑːn/
(geometry)
  1. a flat shape with nine straight sides and nine angles九边形;九角形Topics Colours and Shapesc2
    Word Originmid 17th cent.: formed irregularly from Latin nonus ‘ninth’, on the pattern of words such as hexagon.
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更新时间:2025/3/15 21:25:34