polygonal area

例句：

1. 1.The polygonal area of the city is expanding rapidly.
   这个城市的多边形面积正在迅速扩张。
2. 2.The architect designed a new building with a unique polygonal area.
   建筑师设计了一座具有独特多边形面积的新建筑。
3. 3.The engineer calculated the exact polygonal area of the land.
   工程师计算了这块土地的精确多边形面积。