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旋转是几何图形一种重要的变换方法,新课标把它列为初中生必学的数学内容,并以单独的章节把它编入初中数学教材·反映在中考上,旋转型试题已频频出现在各地的中考数学试卷之中,仅2006年,考及旋转型试题的就有北京市、大连市、宁波市、安徽省、包头市、临汾市……众多省市·可以预见:旋转型试题仍然将是2007年各地中考命题所追求的热点题型之一。
Rotation is an important transformation method of geometry. The new curriculum standard lists it as the mathematics content that junior high school students must learn, and incorporates it into the junior middle school mathematics teaching materials in separate chapters. It is reflected in the entrance examination. Rotational examination questions have appeared frequently. Among the local examination mathematics examination papers, in 2006 alone, examinations of the rotating examination questions included Beijing Municipality, Dalian City, Ningbo City, Anhui Province, Baotou City, Linyi City, and many provinces and cities. It will still be one of the hot topics that the propositions of the national examinations in various regions pursue in 2007.