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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
画直线等分三角形的面积
算柱 (兩位數)
柱體建築師
直角坐標平面上的旋轉變換
四邉形 (四年級) 教師版
Discover Resources
七巧板奔人
http://www.qsir.org/?p=8853
Apollonius Problem 7 CCP Inversion simple 34
GGB研習成果01
圆柱侧面展开图
Discover Topics
Geometric Transformations
Statistics
Root
Division
Cylinder