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圆锥的侧面展开图3D动画的副本
Author:
张健
,
qianqianhouhou
拖动点C
GeoGebra
New Resources
球體建築師
錐體建築師
三位數除以一位數（二）
兩組對邊相等的四邊形
算柱 (兩位數)
Discover Resources
相似三角形: 重溫
題 9
函數愛心
illusion 鏡射
Triangle (Angle)
Discover Topics
Definite Integral
Confidence Interval
Centroid or Barycenter
Differential Equation
Arithmetic Mean