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Rolling Circle
Author:
Roger Lui
GeoGebra
New Resources
四邊形的特性
錐體建築師
畫出對稱圖形
算柱 (兩位數)
兩位數加法
Discover Resources
quadrilaterals 1
四邊形四個九點圓共點(九點心)
Graph Paper
長方形
Mathematics and Optics (and their applications)
Discover Topics
Diagrams
Orthocenter
Cube
Geometric Distribution
Logarithm