nonagon
US /ˈnɑː.nə.ɡɑːn/
UK /ˈnɒn.ə.ɡən/
名詞
九邊形
a plane figure with nine straight sides and nine angles
範例:
•
A regular nonagon has nine equal sides and internal angles of 140 degrees.
正九邊形有九條相等的邊，內角為140度。
•
The architect designed the floor plan in the shape of a nonagon.
建築師將樓層平面圖設計成九邊形。