nonagon
US /ˈnɑː.nə.ɡɑːn/
UK /ˈnɒn.ə.ɡən/
名词
九边形
a plane figure with nine straight sides and nine angles
示例:
•
A regular nonagon has nine equal sides and internal angles of 140 degrees.
正九边形有九条相等的边，内角为140度。
•
The architect designed the floor plan in the shape of a nonagon.
建筑师将楼层平面图设计成九边形。