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月亮的轨道
Author:
myao1999
GeoGebra
New Resources
折扣
撒针估算面积实验
常见四边形是否是双心四边形
科氏力 (Coriolis Force)
活动三：应用性质
Discover Resources
正四面體
二元线性规划的图解法(18.2 例4)
等角作圖
旋轉方形
圆锥曲线折纸操作题（教材案例）
Discover Topics
Equations
Arithmetic Mean
Poisson Distribution
Quadratic Equations
Statistical Characteristics