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Author:
chen mingchuan
GeoGebra
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四邉形 (四年級) 教師版
直角坐標平面上的旋轉變換
兩組對邊相等和有直角的四邊形
兩組對邊相等的四邊形
兩位數加法
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分數與小數
冪函數
Properties of a Square
範例二
圆的平移（平移加滑桿）
Discover Topics
Circumcircle or Circumscribed Circle
Quadratic Equations
Ellipse
Terms
Square