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反射圆,反射线
Author:
getfile
GeoGebra
New Resources
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
GeoGebra笔记功能体验课件
近似值：有效數字
畫出對稱圖形
Discover Resources
Triangle
利用按扭制作控制動畫的開關
厚會聚透鏡 Thick Convergent Lens
橢圓
正立方體->菱形十二面體(滑桿動畫)
Discover Topics
Polynomial Functions
Geometric Transformations
Ellipse
Interest Calculation
Special Points