这是一种新颖试题,它要求同学从简单的具体问题入手,通过比较,找出其中的共同点,然后由此及彼,领悟更高层次的数学规律和内在联系,大致有三种不同情况:一、变式图形添线相仿研究—个几何图形时,如果添了若干辅助线,那么在研究其变式图形时,往往也添类似的辅助线.(例子从略) This is a new test question, which requires students to start with simple and specific issues, through the comparison to find out the common ground, and then from that, to understand the higher level of mathematical laws and internal relations, there are roughly three different situations: First, the variant graphics Tim line similar to - a geometric figure, if you add a number of auxiliary lines, then in the study of the variant graphics, often also add similar auxiliary line. (Example omitted)