《中学生数学》2010年第11期(月下)刊登了吴秀玲老师的文章“圆中定值问题若干例”(以下称“原文”).“原文”中只给出了例题的解法,而未给出这些解法是如何想到的,而这恰恰是学生最想知道的问题!本文将结合“原文”中的例题,探讨解决这类问题的一般规律,供同学们学习时参考. “High School Mathematics” 2010 the 11th (under the moon) published a teacher Wu Xiuling article “a number of examples of the value of the circle ” (hereinafter “original ”). “Original ” only gives The solution of the example, but did not give these solutions is how to think of, and this is precisely what students most want to know! This article will be combined with the “original” in the sample, to explore the general rule to solve such problems for the students Learning reference.