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三角形外心的位置
Author:
均一
GeoGebra
New Resources
兩組對邊相等的四邊形
拼砌四邊形
畫出對稱圖形
判斷球體
画直线等分三角形的面积
Discover Resources
七巧板揖人2
物理
Quiz on Interest 利息：測驗
立體三角測量(例七&八)
圖形周界_H
Discover Topics
Random Variables
Surface
Straight Lines
Centroid or Barycenter
Subtraction