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內切圓滾動
Author:
李春培
Topic:
Circle
內切圓滾動
GeoGebra
New Resources
柱體建築師
異分母分數減法
画直线等分三角形的面积
三位數除以一位數（二）
算柱 (兩位數)
Discover Resources
中點軌跡
平面和正方體截痕
Locus: Fixed Distance From Fixed Point
田中太郎
抛豆实验
Discover Topics
Inequalities
Vectors 2D (Two-Dimensional)
Functions
Pythagoras or Pythagorean Theorem
Optimization Problems