polygon
🇺🇸
/ˈpɑːliɡɑːn/
🇬🇧
/ˈpɒlɪɡən/
A shape on a flat surface that has three or more straight sides.
In math class, we learned how to calculate the area of a polygon.
在数学课上,我们学习了如何计算多边形的面积。