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Mar 18, 2014

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四边形 梨树县小城子镇第一中心小学校田雪晶
四边形 • 认识四边形 • 四边形的特点

四边形的特点： 1、有四条直的边 2、有四个角
有哪些分法？ 把图形分类
我们身边的四边形
小结 • 同学们:你们学到了什么?

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