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固定周界的長方形面積變化
Author:
phcheng
,
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
判斷球體
【案例】圆柱体内放置一个大球六个小球
四邊形的特性
畫出對稱圖形
三位數除以一位數（二）
Discover Resources
conjugate
拼貼
兩面角
test02
正方体、正四面体的外接球
Discover Topics
Arithmetic
Planes
Circumcircle or Circumscribed Circle
Angles
Square