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圆锥曲线定义的拓展（卡西尼卵形线）
Author:
梁航宇
GeoGebra
New Resources
錐體建築師
找出對稱軸
GeoGebra笔记功能体验课件
畫出對稱圖形
四邉形 (四年級) 教師版
Discover Resources
龍騰4_1-1課隨2
Section Curves
扇形弧長公式3
hkdse 2014 by mr lo wy
二次函數中常數項所扮演的角色：向上移動的副本
Discover Topics
Cosine
Kite
Fractal Geometry
Cube
Cylinder