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在解中考计算和证明题时,按题意画出准确的图形,可以在推理的过程中得到观察的辅助,从而更清楚地领悟题意,确定解题的思路.比如要证明两条线段相等,从准确的作图中很容易发现全等三角形或等腰三角形,再由推理使问题得到解决.反之,若画出了一个与题意不符合或误差较大的图形,会使分析无头绪,不但对解题无助,而且还会白白浪费了
When calculating and proving the problem in the middle school exam, the accurate figure is drawn according to the question, which can be assisted by observation in the process of reasoning, so as to understand the meaning of the question more clearly and determine the idea of solving the problem. For example, to prove that two lines are equal From the accurate drawing, it is easy to find a congruent triangle or isosceles triangle, and then the problem is solved by reasoning. Conversely, if a figure that does not conform to the problem or the error is larger, it will make the analysis unclear. Not only does it help solve the problem, but it also wastes money.