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Is this a prism 12
Author:
Shum Kwok Ching
GeoGebra
New Resources
直角坐標平面上的旋轉變換
【案例】2013年安徽高考15题
兩組對邊相等和有直角的四邊形
兩位數除以一位數（一）
球體建築師
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使用中
數學1
滚动的四面体
軸對稱的副本
金惠吉：光的反射与折射
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Rhombus
Hypergeometric Distribution
Rotation
Rectangle
Orthocenter