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两条直线平行条件探究

Author:袁正铎

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找出對稱軸
兩位數除以一位數（一）
第八周作业
異分母分數減法
錐體建築師

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HKCEE 2009 Q17
凸透镜成像
螢橋國中鄭毅華
N邊形滾動的副本
三角形全等的直观图(可重合).许兴华数学

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Hypothesis Testing
Polygons
Rectangle
Geometric Transformations
Statistical Characteristics

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