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梯形有甚麼特性？
Author:
Anthony OR 柯志明
English version:
http://ggbtu.be/m79855
GeoGebra
New Resources
拼砌四邊形
兩位數除以一位數（一）
球體建築師
柱體建築師
畫出對稱圖形
Discover Resources
河內塔 1
菱形有甚麼特性？
transformation_reflection
文創花燈
S0G4L2 到两点距离的运算值为定值1：到两点距离和
Discover Topics
Cuboid
Symmetry
Rectangle
Matrices
Straight Lines