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幾何明珠2-4
Author:
bigbirdjack
GeoGebra
New Resources
四邉形 (四年級) 教師版
找出對稱軸
異分母分數減法
兩位數除以一位數（一）
錐體建築師
Discover Resources
probwei1
圓外冪性質
除法Q5
畢氏定理
纏繞畫1
Discover Topics
Polygons
Straight Lines
Volume
Centroid or Barycenter
Tangent Function