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波利亚在《怎样解题》中指出:“当问题比较困难时,我们可能很有必要进一步把问题再分解成几部分,并研究其更细微的末节.”所以,研究几何图形,一个基本的方法就是要认真分析条件,寻找与之相关的基本图形,并利用这个基本图形的暗示作用,获得或推理相关的结论.对此,本文以2017年两道中考试题为例,作一些探索.一、函数型代数题例1(2017年丽水中考题)如图1,在平
In her book, “How to Solve Problems,” Polia pointed out: “When the problems are more difficult, it may be necessary for us to further break the problem down into more parts and study its more subtle details.” "So studying geometry, A basic method is to carefully analyze the conditions, find the basic graphics associated with them, and use the basic graphics implied to obtain or reason the relevant conclusions.To this, the two 2017 secondary exam questions for example, for some Explore. A functional algebra Case 1 (2017 Lishui Entrance Examination) as shown in Figure 1, in the flat