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30度直角三角形
Author:
郭勇
GeoGebra
New Resources
畫出對稱圖形
柱體建築師
找出對稱軸
三位數除以一位數（一）
錐體建築師
Discover Resources
平方數2平方數2
數列與級數
認識一次函數關係式與圖形
Copy of 韻01
gjc097a29 重心
相位对正弦函数的影响的副本
Discover Topics
Geometry
Median Line
Equations
Geometric Mean
Surface