pentahapto

例句：

1. 1. The pentagon is a geometric figure with five sides and five angles.
   五边形是一种具有五个边和五个角的几何图形。
2. 2. The pentagon is often used in art to represent the shape of a star or other complex patterns.
   五边形在艺术中常用来表示星星或其他复杂图案的形状。
3. 3.In mathematics, the pentagon has been studied for its properties and applications.
   在数学中，五边形已经被研究过其性质和应用。