莱洛三角形 2020-03-07 53 words 1 minute read 莱洛三角形钻出来的圆角正方形![](https://upload.wikimedia.org/wikipedia/commons/2/22/Rotation_of_Reuleaux_triangle.gif)https://www.zhihu.com/question/26703341https://en.wikipedia.org/wiki/Reuleaux_triangle