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正弦定理
Author:
carltim
GeoGebra
New Resources
錐體建築師
三位數除以一位數（二）
四邊形的特性
画直线等分三角形的面积
找出對稱軸
Discover Resources
正二十面體
正切函數值的變化
平移法（二）
kkklkl
Shoot Game
Discover Topics
Addition
Isosceles Triangles
Vectors
Quadrilaterals
Symmetry