opposite edge of a polyhedron

例句：

1. 1. The architect drew a sketch of the building's opposite edge.
   建筑师绘制了建筑物相对边缘的草图。
2. 2.When you stand on the opposite edge of the cliff, you can see the entire valley below.
   当你站在悬崖的相对边缘时，你可以看到下面的整个山谷。
3. 3. The artist painted the opposite edge of the canvas with vibrant colors.
   艺术家在画布的相对边缘用鲜艳的颜色绘画。