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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
第八周作业
找出對稱軸
球體建築師
Earth with coastline
長方體平面投影 (Codex版)
Discover Resources
方格紙上畫平行四邊形1
畢式定理（丞昀）
相切的三圓
S1 Ex9.2 Q17
碎形
Discover Topics
Real Numbers
Means
Polygons
Intersection
Matrices