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空間中兩向量夾角
Author:
羅驥韡 (Pegasus Roe)
GeoGebra
New Resources
拼砌四邊形
異分母分數減法
【案例】圆柱体内放置一个大球六个小球
兩位數除以一位數（二）
找出對稱軸
Discover Resources
老皮
proof10 曹詠鈞
相同圖形的拼砌（三角形）
mathmedia_40204
生日问题
Discover Topics
Real Numbers
Cuboid
Tangent Function
Algebra
Hypergeometric Distribution