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Author:
郭致伸
GeoGebra
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探究三角形的全等條件
漂亮的摇摆曲线
【案例】2018年全国1卷理科12题
祖冲之的期望:内棋与外棋
多邊形的面積
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三角形重心
直線方程式--斜率比較
angle between line and plane
Rotational symmetry of triangular prism
【案例】2013年安徽高考15题
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Parametric Curves
Planes
Sphere
Volume
Prism