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拼砌四邊形
判斷球體
畫出對稱圖形
兩組對邊相等的四邊形
兩組對邊相等和有直角的四邊形
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優良作品2(薇如)
Liu Huis Methode zum Finden von π
拋物線五-包絡線法
平面几何问题
两角和的正弦公式几何证明（改进）
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Tree Diagrams
Median Line
Difference and Slope
Mathematics
Random Experiments