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n龟问题
Author:
赵林
GeoGebra
New Resources
異分母分數減法
【案例】圆柱体内放置一个大球六个小球
兩位數加法
畫出對稱圖形
球體建築師
Discover Resources
積分
九點圓
周长相等,正方形,长方形和正三角形,圆面积大小比较
用GGB制作奔驰轮胎.许兴华数学
平面截圆锥面
Discover Topics
Arithmetic Operations
Perimeter
Cube
Intersection
Histogram