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GeoGebra
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腳踏車
Author:
連琨銘
GeoGebra
New Resources
球体的体积推导
錐體建築師
兩位數除以一位數（二）
柱體建築師
畫出對稱圖形
Discover Resources
四心的變化II
三角形
正四角錐(可以旋轉， 顯示邊， 選擇透視)
兩橢圓交集
勾股定理
Discover Topics
Logic
Algebra
Pythagoras or Pythagorean Theorem
LCM and GCD
Centroid or Barycenter