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椭圆的离心率
Author:
孟宝兴
GeoGebra
New Resources
第八周作业
畫出對稱圖形
球體建築師
球体的体积推导（优化版）
判斷球體
Discover Resources
Slope of perpendicular lines
Copy of 方格紙上畫四邊形
利用Geogebra說明平行x軸與平行y軸之直線方程式性質
黃金矩形
圆锥曲线的产生
Discover Topics
Step Functions
Tangent Line or Tangent
Quadratic Equations
Random Experiments
Complex Numbers