关于立体图形表面的最短路径问题,又称“绕线问题“,是立体几何中很富趣味性的一类问题。它牵涉的知识广,沟通了平面几何、立体几何以及平面三角的联系,能训练学生的空间想象能力。而且,也很富有技巧性。在此,笔者 The problem of the shortest path on the surface of the three-dimensional graphics, also called the “winding problem”, is a very interesting type of problem in the three-dimensional geometry. It involves a wide range of knowledge, communicates the connection of plane geometry, solid geometry and plane triangles, and can train students’ spatial imagination ability. Moreover, it is also very skillful. Here, the author