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最小周長
Author:
張丰耘
GeoGebra
New Resources
兩位數除以一位數（一）
找出對稱軸
兩位數加法
画直线等分三角形的面积
兩組對邊相等的四邊形
Discover Resources
因式分解測驗
Ladder on Wall
Copy of 曲柄搖桿
孔明棋
变化的三角形的外心.许兴华数学
Discover Topics
Natural Numbers
Geometric Distribution
Ellipse
Exponential Functions
Rectangle