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伍四红圆与正方形面积同周长比较

Author:小数点爱数学

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【案例】2018年全国1卷理科12题
判斷球體
柱體建築師
兩組對邊相等的四邊形
兩位數除以一位數（一）

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曲柄搖桿
菱形的特性
Similar triangles inscribed iteration
-3 ≤ cosA+cosB+cosC ≤ 3/2
bay1-2&1-3

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General Quadrilateral
Area
Translation
Sequences and Series
Cone

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