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最小周長
Author:
張丰耘
GeoGebra
New Resources
拼砌四邊形
兩組對邊相等的四邊形
三位數除以一位數（二）
sanjiaohanshu
畫出對稱圖形
Discover Resources
Simultaneous Linear Equations 聯立二元一次方程
兩圓內外公切線
z=sin(sqrt(x^2+y^2))
三次函数定积分的动态演示.许兴华数学
利用頂點描述二次函數 的複本
Discover Topics
Linear Equations
Cylinder
Set Theory
Hyperbola
Similarity Transformation or Similarity