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圓外切及內切
Author:
luke huang
GeoGebra
New Resources
錐體建築師
【案例】圆柱体内放置一个大球六个小球
找出對稱軸
画直线等分三角形的面积
兩位數除以一位數（一）
Discover Resources
kevin
Congruent Triangles Demo
四次函數
橢圓軌跡
Fill the circle的副本
Discover Topics
Ellipse
Straight Lines
Boxplot
Trigonometry
Plane Figures or Shapes