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利用“方程”解线段和角的计算题的一般步骤与列方程解应用题的步骤相同.具体步骤如下:1.审题:深刻、全面地理解题意,分析未知量和已知量以及它们之间的相互关系.2.设元:选取一个或几个关键的未知量用字母来表示,一般情况可用直接设法,特殊情况也可以用间接设法.3.列式:根据数量关系列出方程(组),并求解.4.检验:检验解出的答案是否符合要求.5.作答.例1已知:如图1,两条等长的线段AB与CD,有各自长度的1/3彼此重合,M、N分别是AB和CD的中点,且
Use the “equation” solution line and angle of the calculation steps of the general steps and column equation solution application steps the same. Specific steps are as follows: 1. Examination questions: a profound, comprehensive understanding of the problem, analysis of unknowns and known quantities and The relationship between them .2 yuan: select one or a few key unknowns with letters to represent the general situation can be directly used to try, special circumstances can also be used indirectly .3. Column: According to the relationship between the number of listed Equation (group), and solve .4 test: test whether the answer is satisfactory .5 answer.Example 1 is known: as shown in Figure 1, two equal length of the line AB and CD, have their own length of 1 / 3 coincide with each other, M, N are the midpoints of AB and CD respectively, and