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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
兩位數除以一位數（一）
錐體建築師
判斷球體
直角坐標平面上的旋轉變換
找出對稱軸
Discover Resources
AREA
Direct and Inverse Variation 正變與反變
Menger Sponge
相似而不断变化的正多边形.许兴华数学
动点与函数图象1
Discover Topics
Linear Regression
Power Functions
Histogram
Median Value
Piecewise Functions