接读贵刊2014年5月下,细读陈明儒老师的《巧用相似三角形解题》一文,收获颇丰.原文作者列举了几个较有难度的例子,很好地展示了相似三角形的使用技巧,值得学习.然而对文中的例6,原文作者用构造相似的方法给出一种解答,技巧性颇强,不易想到.我从一个初中生的角度和自身解题经验出发,综合平时数学老师传授的一些几何技巧,得到了一些更为简洁自然的证法,与大家共享. Read the article in May 2014, read the Chen Mingru teacher “clever use of similar triangles to solve problems,” a great success. The original author cited several more difficult examples, a good example of the use of similar triangles Skills, is worth learning.However, the text of Example 6, the original author with a similar method of construction gives a solution, quite skillful, not easy to think.From the perspective of a junior high school students and their own problem-solving experience, the usual combination of mathematics Some geometric skills taught by the teacher, got some more concise and natural law, to share with you.