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Author:
Ricky Chan
GeoGebra
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【案例】2018年全国1卷理科12题
球體建築師
兩組對邊相等的四邊形
算柱 (兩位數)
兩位數加法
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鏡射矩陣
circle
對稱圖形
变化的三角形的内心.许兴华数学
f(x)=sinx的圖形--伸縮與平移
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Linear Regression
Planes
Calculus
Triangles
Congruence