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向量與坐標
Author:
+x sir
GeoGebra
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兩位數加法
画直线等分三角形的面积
【案例】2013年安徽高考15题
畫出對稱圖形
兩組對邊相等和有直角的四邊形
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正四面體作業
外资知名
同心圓
tan90
不信你能過 1
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Histogram
Step Functions
Prism
Cone
Conditional Probability