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不規則圖形的周界(凹)
Author:
WYC
GeoGebra
New Resources
小数 的副本
找出對稱軸
判斷球體
sanjiaohanshu
畫出對稱圖形
Discover Resources
直线与椭圆
雙曲線2--焦點法
函数作图工具的副本
角谷猜想
固定周界的長方形的面積變化（周界是200厘米）
Discover Topics
Logarithm
Parallelogram
Probability
Calculus
Inequalities