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小時鐘
Author:
kwwong
GeoGebra
New Resources
兩位數除以一位數（二）
三位數除以一位數（二）
画直线等分三角形的面积
異分母分數減法
畫出對稱圖形
Discover Resources
earth
球體建築師
三角形，邊上平分面積
周考最后一题
Ex5D#6
Discover Topics
Constructions
Right Triangles
Similar Triangles
Confidence Interval
Set Theory