n.九边形，九角形

A nonagon is a polygon with nine sides and angles.
The irregular nonagon doesn't have equal sides or angles.
The nonagonal doily was intricately woven by the artisan.
The nonagon floor tile pattern creates an interesting geometric design.
In a regular nonagon, all interior angles measure 140 degrees.
The nonagon room had unique architectural features that caught the visitor's eye.
The nonagon dartboard provided players with various throwing options.
The nonagon-shaped garden path led visitors on a winding journey.
She designed a puzzle with multiple nonagonal pieces for children to assemble.
The nonagon chess board offers a novel gameplay experience with unconventional piece movements.
中文释义
非十边形是一个有九条边和角的多边形。
不规则的非十边形没有等长的边或相等的角。
这个非十边形的编织垫精细入微，出自巧手。
非十边形的地砖图案创造出独特的几何设计。
在一个正非十边形中，所有的内角都是140度。
非十边形房间的独特建筑特色吸引了参观者的注意。
非十边形的飞镖盘为玩家提供了多种投掷选择。
非十边形形状的花园小径引领访客蜿蜒前行。
她设计了一个由多个非十边形拼块组成的儿童拼图。
非十边形的国际象棋棋盘提供了一种新颖的游戏体验，因为其不寻常的棋子移动方式。