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特別角的三角函數值(2)
Author:
藍邦偉 Blue
GeoGebra
New Resources
【案例】2013年安徽高考15题
第八周作业
【案例】圆柱体内放置一个大球六个小球
空间中两直线的位置关系
兩位數除以一位數（二）
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物件顯示條件
directed number_magnet model
利用對摺找內心
-3/2 ≤ cosα + cosβ + cosγ ≤ 3
椭圆的定义
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Cuboid
Complex Numbers
Hypothesis Testing
Perimeter
Cone