Penta-

例句：

1. 1. The pentagon is a shape with five sides.
   五边形是一种有五个边的图形。
2. 2.The pentagon is used in many sports logos.
   五边形在许多运动标志中被使用。
3. 3. The pentagon has five equal sides and is often used as a symbol of symmetry.
   五边形有五个相等的边，常常作为对称的象征。