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三圓外切
Author:
AlexWang
GeoGebra
New Resources
四邉形 (四年級) 教師版
畫出對稱圖形
【案例】圆柱体内放置一个大球六个小球
三位數除以一位數（一）
錐體建築師
Discover Resources
中線
正多边形内接迭代
西姆松定理推廣(西姆松圓)
梯形
分數小數
Discover Topics
Cuboid
Correlation
Statistical Characteristics
Intersection
Conditional Probability