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周长相等，正方形，长方形和正三角形，圆面积大小比较
Forfatter
冯圣军
Emne:
Kvadrat
,
Trekanter
GeoGebra
Nye Materialer
畫出對稱圖形
錐體建築師
兩位數加法
兩位數除以一位數（二）
找出對稱軸
Opdag Ressourcer
World's Second-Hardest Easy Geometry Problem
圓上圓
DSE Circle-ACT06 Relationship of Tangents and Radius of a Circle
GGB4
sin(x) 的函數圖形 官長壽老師
Udforsk emner
Histogram
Multiplikation
Differentialligninger
Retvinklede trekanter
Geometriske flytninger