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F2_Ch11.2_三角學(邊長與角的關係)
Author:
timothyngyf
GeoGebra
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空间中两直线的位置关系
圓的切線方程
球体的体积推导（优化版）
【案例】2018年全国1卷理科12题
漂亮的摇摆曲线
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優良作品2(季緯)
線性組合2 三角形
动态演示
tool1
多边形外角和的副本
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Differential Calculus
Sphere
Inequalities
Translation
Centroid or Barycenter