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四顆外切球
Author:
林冠曄
GeoGebra
New Resources
常见四边形是否是双心四边形
第八周作业3
撒针估算面积实验
折扣
椭圆内切圆链
Discover Resources
分割
中點軌跡(動點在兩圓上)
Copy of 分數比較
鉛筆畫圓
一个三棱锥的绘图案例
Discover Topics
Diagrams
Pythagoras or Pythagorean Theorem
Angles
Sphere
Perimeter