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矩形周长一定时正方形面积最大
Author:
卢德洪
Topic:
Area
,
Perimeter
,
Rectangle
GeoGebra
New Resources
兩組對邊相等的四邊形
兩位數除以一位數（二）
柱體建築師
三位數除以一位數（一）
判斷球體
Discover Resources
曲線
Locus (Parallel)
放射狀旋轉圖形(2)
拋物線代數性質,光學性質
曲線所圍區域的面積 (The Area between Curves)
Discover Topics
Constructions
Standard Deviation
Matrices
Poisson Distribution
Fractal Geometry