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國旗
Author:
王正豪
GeoGebra
New Resources
四邊形的特性
兩位數除以一位數（一）
球體建築師
直角坐標平面上的旋轉變換
找出對稱軸
Discover Resources
直線與圓的位置關係
Apollonius Problem kissing coin problem
周考最后一题
梯形堆垛
鉛筆畫圓
Discover Topics
Area
General Quadrilateral
Diagrams
Incircle or Inscribed Circle
Parabola