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二年级数学下册六《认识图形》长方形与正方形综合能力训练北师大版.doc

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1长方形与正方形1在下面的图形中分别画出一个最大的正方形。 2如下图所示，三个完全一样的正方形拼成一个长方形，请在括号里填上适当的数。 3一张长方形纸的长是 9 厘米，宽是 6 厘米。将它折成一个最大的正方形，边长是多少厘米? 4下面各图是什么图形?沿虚线连续对折两次后又是什么图形? ( ) ( ) ( )对折后是 对折后是 对折后是 ( ) ( ) ( )1略 23边长是 6 厘米 4长方形长方形 正方形正方形 正方形三角形 2

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