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二面角
Author:
qianqianhouhou
二面角的概念,拖动A、E点改变半平面
GeoGebra
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【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
三位數除以一位數(一)
【案例】2013年安徽高考15题
判斷球體
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挑战中考压轴题
方格紙上畫長方形2
simple arena
Similar triangles reasons 2
分項對消式的寫法的副本
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Random Variables
Rectangle
Cosine
Geometric Distribution
Statistical Characteristics