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正4正8黏合
Author:
Wu Xiao-Ren
GeoGebra
New Resources
判斷球體
兩位數加法
兩位數除以一位數（二）
第八周作业
異分母分數減法
Discover Resources
生日悖論
複合圖形表面積(一)
量角器2
ggb 優良作品 _10
anlge at centre twice angle at circumference
Discover Topics
Fractal Geometry
Line Segment
Expected Value
Complex Numbers
Geometric Mean