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线段的和、差、倍、分在几何证明中比较灵活 ,在解决问题中常用到的方法有 :截长法、补短法、加倍法、折半法等等 .1 .所谓截长法是指在较长的线段上截取一段等于其它两条线段中的一段 ,然后再证明截后所余线段等于两线段中的另一段 .所谓补短法即延长两线段中较短的一条 ,使其
The sum, difference, times, and points of the line segments are more flexible in the geometrical proof. The commonly used methods to solve the problems include the length-cutting method, the complement method, the doubling method, the halving method, and so on. 1. The so-called truncation method refers to On a longer line segment, a segment equal to one of the other two line segments is obtained, and then the remaining line segment is equal to the other segment of the two line segment. The so-called complement method is to extend the shorter one of the two line segments to make it