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S0G38 三角形的內心
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学用数学
GeoGebra
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拼砌四邊形
找出對稱軸
直角坐標平面上的旋轉變換
錐體建築師
兩位數加法
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Measurement & Classification of Angles 角的量度和分類
games
Is this a prism 1
quiz 9.1 1(d)
分段函数
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Interest Calculation
Parallelogram
Percentages
Statistics
Scalene Triangles