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科展

Author:洪馷孺

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拼砌四邊形
兩組對邊相等的四邊形
四邊形的特性
畫出對稱圖形
近似值：有效數字

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橢圓螺旋
ghseh 二次函數描點法左右平移-6
椭圆的定义
effect of changing data by Mr LO WY
表内除法

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Congruence
Scalene Triangles
Probability
Multiplication
Triangles

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