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陳柄何
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三位數除以一位數(二)
兩位數除以一位數(一)
畫出對稱圖形
第八周作业
兩組對邊相等的四邊形
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gtx-f03-usa-01 美國國旗
动圆在定圆上滚动
伊斯蘭窗花 0410
用几何概型估计pi值
正方体镂空模型(通用)
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Vectors
Straight Lines
Perimeter
Quadratic Equations
Derivative