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正二十面體
Author:
侯杰材
正二十面體
GeoGebra
New Resources
【案例】圆柱体内放置一个大球六个小球
球體建築師
兩組對邊相等和有直角的四邊形
兩位數加法
畫出對稱圖形
Discover Resources
九點圓
多邊形外角和
圓例2
碎形三角形
太陽系
Discover Topics
Division
Line Segment
Linear Programming or Linear Optimization
Plane Figures or Shapes
General Quadrilateral