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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
兩組對邊相等的四邊形
畫出對稱圖形
找出對稱軸
直角坐標平面上的旋轉變換
球體建築師
Discover Resources
SIMPLE EQUATION
繪製平行四邊形
p11-11
立體圖形的截面
正多邊形柱體表面積展開圖
Discover Topics
Mode
Kite
Logarithm
Orthocenter
Set Theory