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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
拼砌四邊形
第八周作业
球體建築師
兩組對邊相等的四邊形
小数 的副本
Discover Resources
端點在兩圓周線段中點軌跡
橢圓軌跡02
Choose the most suitable 'improvised units'(中間人)
基础知识
圓周 (圖形H) 的複本
Discover Topics
Special Points
Root
Division
Quadratic Equations
Limits