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对合1
Author:
代国兴
GeoGebra
New Resources
【案例】圆柱体内放置一个大球六个小球
三位數除以一位數（二）
兩位數除以一位數（一）
畫出對稱圖形
四邉形 (四年級) 教師版
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滾動
P6 圓周01B
拋物線4--平行四邊形法
双曲线轨迹演示
S0G4L2 到两点距离的运算值为定值1：到两点距离和
Discover Topics
Symmetry
Curve Sketching
Inequalities
Sine
Hypergeometric Distribution