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正方形和長方形有甚麼特性？
Author:
Anthony OR 柯志明
Eng version:
http://ggbtu.be/m79823
GeoGebra
New Resources
判斷球體
美國國旗 (Codex 版)
兩組對邊相等的四邊形
兩組對邊相等和有直角的四邊形
找出對稱軸
Discover Resources
用面積逼近圓周率
圓繞圓
由對稱方法畫出指數函數的圖形
star
平面直角坐标系的构成
Discover Topics
Bar Chart or Bar Graph
Trigonometric Functions
Stochastic Process or Random Process
Subtraction
Quadratic Functions