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“等腰三角形”这一节内容中,常会遇到一类找点使其构成等腰三角形的问题.在解题中常会遗漏部分点或找不出具有如此性质的点.究其原因是多方面的,但其中最为重要的一点是:同学们仍未完全学会运用“分类”的数学思想来解决问题.下面几例的解答定会对同学们有所启示。
In the section of “isosceles triangle”, we often encounter the problem of finding a point to make up an isosceles triangle. In solving a problem, we often miss some points or find no points of the same nature. The reason is many. On the other hand, the most important point is that the students have not yet fully learned to use the “classification” of mathematical thinking to solve problems. The answers to the following examples will inspire students.