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GeoGebra
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【案例】2018年全国1卷理科12题
球體建築師
【案例】2013年安徽高考15题
畫出對稱圖形
兩位數加法
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點與圓的位置關係
Apollonius Problem 4 LLP Homo 12
I Love Pixar
对数函数——底数大小与图形
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Integers
Arithmetic Operations
Arithmetic Mean
Rhombus
Secant Line or Secant