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uccke
GeoGebra
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四邊形的特性
兩位數除以一位數(一)
畫出對稱圖形
找出對稱軸
兩組對邊相等和有直角的四邊形
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平行線
HKCEE 2011 Q17
课题
外公切線長
求二次函数f(x)=-x^2+ax+3区间[-2,3]上的最大值
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Conic Sections
Boxplot
Orthocenter
Standard Deviation
Correlation