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平行线分线段成比例
Author:
王清华
平行线分线段成比例
GeoGebra
New Resources
錐體建築師
球體建築師
三位數除以一位數（一）
第八周作业
找出對稱軸
Discover Resources
立體圖形的旋轉對稱
test
More about Function
折線軌跡
test007
Discover Topics
Ratios
Vectors 3D (Three-Dimensional)
Plane Figures or Shapes
Scatter Plot
Arithmetic