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GeoGebra
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In-centre
Author:
johnmayhk
GeoGebra
New Resources
三位數除以一位數（二）
錐體建築師
GeoGebra笔记功能体验课件
畫出對稱圖形
異分母分數減法
Discover Resources
Add and subtract (binary)
軌跡觀察---模擬摺紙
圓與兩平行切線
Net of pyramid
相机光圈模拟（3D）
Discover Topics
Subtraction
Isosceles Triangles
Sequences and Series
Kite
Special Points