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Area of shapes 2
Author:
helenzhu1994
GeoGebra
New Resources
兩組對邊相等的四邊形
錐體建築師
畫出對稱圖形
異分母分數減法
兩位數除以一位數（二）
Discover Resources
Pyramid and Cone1
塗鴉
單一物件連續動畫
旋轉圓
翰林數學_2下_CH4-2_特殊平行四邊形有關對角線的性質
Discover Topics
Algebra
Triangles
Incircle or Inscribed Circle
Poisson Distribution
Straight Lines