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分數加法和減法
Author:
Samsam
GeoGebra
New Resources
兩組對邊相等的四邊形
算柱 (兩位數)
兩位數除以一位數（二）
找出對稱軸
畫出對稱圖形
Discover Resources
聖路易拱門
银币
圓內接四邊形
Curtate Cycloid
向量分解的副本
Discover Topics
Bar Chart or Bar Graph
Rectangle
Vectors
Secant Line or Secant
Triangles