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求 a + b 的最大值?
Author:
羅驥韡 (Pegasus Roe)
GeoGebra
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三位數除以一位數(二)
兩組對邊相等和有直角的四邊形
異分母分數減法
兩組對邊相等的四邊形
四邉形 (四年級) 教師版
Discover Resources
等腰三角形 - 等角對等邊
不規則區域著色
正方體
地球儀
對稱圖形
Discover Topics
Optimization Problems
Cube
Upper and Lower Sum or Riemann Sum
Vectors 3D (Three-Dimensional)
Isosceles Triangles