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椭圆的定义
Author:
GeoGebra Institute of WuXi
GeoGebra
New Resources
球體建築師
三位數除以一位數（一）
柱體建築師
四邉形 (四年級) 教師版
找出對稱軸
Discover Resources
eye tracing
滾出直線之3
腳踏車痕模擬
立體圖形的特徵
求二次函数f(x)=-x^2+ax+3区间[-2,3]上的最大值
Discover Topics
Ellipse
Trigonometric Functions
Pythagoras or Pythagorean Theorem
Cube
Trapezoid