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陳兪宏
艾董幾何題
GeoGebra
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拼砌四邊形
球體建築師
【案例】2018年全国1卷理科12题
球体的体积推导
球体的体积推导(优化版)
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testdcfdfsdfsd
Section Curves
Q3-11
畢氏定理平移版
slope
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Parabola
General Quadrilateral
Subtraction
Set Theory
Linear Equations