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向量與坐標
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GeoGebra
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漂亮的摇摆曲线
【案例】2018年全国1卷理科12题
垂直線的斜率
兩位數除以一位數（一）
【案例】2013年安徽高考15题
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try_111
球面與截平面的關係
封閉區域填色
眼睛的毛病(近視及遠視)
兩線段和圓的關係
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Optimization Problems
Trigonometric Functions
Trigonometry
Cuboid
Perimeter