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David Liu
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规律性
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种类
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曲直
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笔画
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数量
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等差数列
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位置变换
平移、
旋转(顺时针、逆时针)
翻转
缩放
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对称
(字母对称、图形对称)
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面数
封闭空间的个数,如汉字和数字里面0或口的个数
图形里面划分出来多少个空间
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立体
展开图
几面体:多少个面就是几面