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平行四邊形有甚麼特性？
Author:
Anthony OR 柯志明
Topic:
Parallelogram
English version:
http://ggbtu.be/m79826
GeoGebra
New Resources
球體建築師
三位數除以一位數（二）
直角坐標平面上的旋轉變換
第八周作业
拼砌四邊形
Discover Resources
simulation of the uniform variable linear motion
時鐘與數學
面積 題目3
简单迭代;迭代列表
完全图及其变形
Discover Topics
Standard Deviation
Probability
Natural Numbers
Symmetry
Exponential Functions