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Author:
李春培
I love you
GeoGebra
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拼砌四邊形
【案例】2018年全国1卷理科12题
【案例】圆柱体内放置一个大球六个小球
四邊形的特性
四邉形 (四年級) 教師版
Discover Resources
PMC 2014-15 ans
三圓外切
CIRCLE
滾球平台
凸多边形在直线上的滚动
Discover Topics
Logic
Constructions
Vectors 2D (Two-Dimensional)
Definite Integral
Tangent Function