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peacock3
Author:
李春培
peacock3
GeoGebra
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兩組對邊相等和有直角的四邊形
錐體建築師
兩組對邊相等的四邊形
三位數除以一位數（二）
球體建築師
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空間三坐標平面101.12.22
北區模考非選第二題 (2014.03.06)
Task4
密鋪2
多边形旋
Discover Topics
Arithmetic
Angles
Binomial Distribution
Diagrams
Natural Numbers