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Author:
袁智强
GeoGebra
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双心四边形
百分數及其應用
活动三:应用性质
折扣
撒针估算面积实验
Discover Resources
離心率與圓錐曲線
勝敗機率
deductive geometry
Pythagorean Theorem Proof with Shearing
探索三角形外角定理
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Function Graph
Probability
Parametric Curves
Rectangle
Diagrams