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多边形与圆相互滚动
Author:
朱亮
GeoGebra
New Resources
小学资源收集
平行線的判定
盈利與虧蝕
活动三:应用性质
球体的截面
Discover Resources
等量公理
兩線段和圓3
求兩斜線區域的差
小數的認識(一)
三角函数线
Discover Topics
Plane Figures or Shapes
Upper and Lower Sum or Riemann Sum
Addition
Area
Cone