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內切圓滾動
Author:
李春培
Topic:
Circle
內切圓滾動
GeoGebra
New Resources
球體建築師
算柱 (兩位數)
兩組對邊相等的四邊形
兩位數除以一位數（二）
柱體建築師
Discover Resources
費式數列
選擇合適的「中間人」
畢氏定理拼圖007(8片)
鉛筆畫圓
组合体的表面积1
Discover Topics
Rotation
LCM and GCD
Incircle or Inscribed Circle
Expected Value
Ellipse