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对顶角与邻补角

Author:谭伟

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近似值：有效數字
兩組對邊相等和有直角的四邊形
算柱 (兩位數)
第八周作业
畫出對稱圖形

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色彩視覺藝術：三色彩帶
JAY三角
正方體交角
畢氏定理完成20170330
學習活動二之三解的圖形

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Statistics
Quadratic Equations
Ellipse
Logic
Cosine

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