引例(华师大版七年级数学(上)第四章复习题)如图1,一只昆虫要从正方体的一个顶点爬到相距它最远的另一个顶点,哪条路径最短?说明理由.分析与解这是一道培养学生空间想象力的好题,不少地区的中考试卷也频频出现.将正方体展开(如图2),根据“两点之间线段最 An example (China Normal University Edition 7th grade mathematics (I) Chapter 4 review questions) As shown in Figure 1, an insect crawls from one vertex of a cube to the other vertex farthest from it, and which path is the shortest? Analytical and Reconciliation This is a good question in cultivating students’ spatial imagination. In many areas, the examination papers are also appearing frequently. The cube is developed (see Figure 2), according to the line segment between the two points.