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GeoGebra
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垂直3
Author:
Hui Sir
GeoGebra
New Resources
拼砌四邊形
畫出對稱圖形
算柱 (兩位數)
四邊形的特性
判斷球體
Discover Resources
排列
Circle
心型線
分2
勝者即正義，可愛即正義～(可用Ctrl+滑鼠滾輪放大界面)
Discover Topics
Symmetry
Straight Lines
Geometric Transformations
Probability
Incircle or Inscribed Circle