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椭圆内切圆链
Author:
孟宝兴
GeoGebra
New Resources
sanjiaohanshu
兩位數除以一位數（一）
拼砌四邊形
找出對稱軸
兩位數除以一位數（二）
Discover Resources
Sequence指令練習(逐一套疊正方形)
Copy of 方格紙上畫四邊形
躲掉1,-1,0的動態文字
螺旋正方形
初中数学教学素材
Discover Topics
Surface
Conic Sections
Incircle or Inscribed Circle
Terms
Parametric Curves