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滾動的圓
Author:
連琨銘
GeoGebra
New Resources
四邉形 (四年級) 教師版
錐體建築師
拼砌四邊形
判斷球體
四邊形的特性
Discover Resources
指数函数
start and end clock face
reflectional symmetry_3
圓錐曲線與平行四邊形定理
小正多边形在大正多边形内的滚动（边长相等）
Discover Topics
Matrices
Plane Figures or Shapes
Centroid or Barycenter
Line Segment
Variance