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拋物線軌跡（內切型）
Author:
JutorMath
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
判斷球體
畫出對稱圖形
兩組對邊相等的四邊形
兩位數加法
Discover Resources
Task1
面積和體積
二次函數：係數與圖形的變化
滑桿動畫
斜率的值
Discover Topics
Equilateral Triangles
Matrices
Standard Deviation
Tangent Line or Tangent
Hyperbola