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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
球体的体积推导(优化版)
畫出對稱圖形
拼砌四邊形
兩位數除以一位數(一)
三位數除以一位數(二)
Discover Resources
畢氏定理
線型函數
一元二次方程式-應用問題(兩圓相切-2)
正方形堆垛
函数作图工具的副本
Discover Topics
Square
Ellipse
Upper and Lower Sum or Riemann Sum
Combinatorics
Incircle or Inscribed Circle