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play tennis
Author:
李春培
play tennis
GeoGebra
New Resources
球體建築師
兩組對邊相等和有直角的四邊形
【案例】圆柱体内放置一个大球六个小球
兩位數除以一位數（二）
画直线等分三角形的面积
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認識時鐘
P6 圓周
畢氏定理完成20170330final
六角形(草稿)
力的拆解
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Dilation
Solids or 3D Shapes
Tangent Function
Square
Area