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橢圓的切線作圖
Author:
紀延平
GeoGebra
New Resources
柱體建築師
判斷球體
畫出對稱圖形
球體建築師
兩組對邊相等和有直角的四邊形
Discover Resources
分形几何欣赏初步：树型图
柱體和錐體
畢氏樹
粒子的拋物線軌跡
正方体镂空模型（通用）
Discover Topics
Step Functions
Square
Vectors
Parametric Curves
Continuity