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菱形有甚麼特性?
Author:
Anthony OR 柯志明
English version:
http://ggbtu.be/m79847
GeoGebra
New Resources
异形操场
科赫雪花
第八周作业2
折扣
球体的截面
Discover Resources
正八面體
斜率
圓&五邊形
T,N,B vectors of space curve.
竞猜游戏:说出图中角的大小
Discover Topics
Definite Integral
Translation
Scatter Plot
Quadratic Equations
Rotation