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圆内角与圆外角
Author:
方程
GeoGebra
New Resources
兩位數加法
找出對稱軸
画直线等分三角形的面积
判斷球體
拼砌四邊形
Discover Resources
圓周角
myFirstGeoGebra
Equality of Ratios
sin函數
繪本
Discover Topics
Circle
Rotation
Complex Numbers
Pythagoras or Pythagorean Theorem
Addition