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折纸得到椭圆
Author:
王广喜
GeoGebra
New Resources
常见四边形是否是双心四边形
撒针估算面积实验
圓的基本性質
科氏力 (Coriolis Force)
折扣
Discover Resources
星八面體
Copy of 立體圖形－截面
鑲嵌
有趣的梯形面積問題
一位数加减法运算自我测评
Discover Topics
Piecewise Functions
Binomial Distribution
Calculus
Parabola
Trapezoid