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圆在初中阶段占有重要地位,它与直线型图形的结合使图形更具有灵活性,它与代数的结合使其更具有复杂性,增加了与其他知识的联系.转化思想在解决这类问题时有特殊的功效.现分类举例如下.
The circle plays an important role in the junior high school stage. Its combination with linear graphics makes the graphic more flexible. Its combination with algebra makes it more complex and increases the connection with other knowledge. Transforming ideas in solving such problems There are special effects. The classification is as follows.