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19.1-4 椭圆的标准方程和性质
Author:
GeoGebra Institute of WuXi
GeoGebra
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画直线等分三角形的面积
平行線的斜率
空间中两直线的位置关系
兩位數除以一位數（一）
【案例】圆柱体内放置一个大球六个小球
Discover Resources
滾出直線滾出直線
P6 圓周01C
量角器
拋物線3-平行四邊形法
加法与乘法
Discover Topics
Reflection
General Quadrilateral
Polynomial Functions
Sphere
Differential Equation