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How to draw an octagon with ruler and compasses?
Author:
Pythoner
GeoGebra
New Resources
算柱 (兩位數)
異分母分數減法
三位數除以一位數（一）
兩位數除以一位數（二）
找出對稱軸
Discover Resources
我的第一個GGB動畫
正立方體展開
Locus (Parallel lines)
正十二面體內接正六面體旋轉
小六_容量與體積問題
Discover Topics
Continuity
Reflection
Triangles
Orthocenter
Addition