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平移练手
Author:
吕玉雷
GeoGebra
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空间中两直线的位置关系
【案例】2013年安徽高考15题
球体的体积推导
直線的斜率
探究三角形的全等條件
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Weighted Mean 加權平均數
定积分的概念
Primeter
Angle Between a Line and a Plane Definition 線與平面的交角 定義
分解质因数
Discover Topics
Orthocenter
Tangent Line or Tangent
Cosine
Geometry
Sphere