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五圓相切
Author:
susan
兩兩相切
GeoGebra
New Resources
直角坐標平面上的旋轉變換
錐體建築師
三位數除以一位數（二）
兩組對邊相等的四邊形
畫出對稱圖形
Discover Resources
兩圓及交弦
三節棍
Cuboid 長方體
Copy of 重複組合求正整數解
椭圆的生成
Discover Topics
Arithmetic Operations
Equilateral Triangles
Vectors
Median Line
Conic Sections