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最小周長
Author:
張丰耘
GeoGebra
New Resources
兩組對邊相等的四邊形
小数 的副本
畫出對稱圖形
四邉形 (四年級) 教師版
近似值：有效數字
Discover Resources
平面截距式
立體展開圖
畢氏定理
example1_moon
Graph of Trigonometry
Discover Topics
Curve Sketching
Limits
Random Variables
Vectors
Conic Sections