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定值角度

Author:郭勇

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【案例】2018年全国1卷理科12题
兩組對邊相等和有直角的四邊形
判斷球體
兩位數除以一位數（一）
畫出對稱圖形

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彩虹三角
立體圖形 KH
各種五邊形
線的面化
正方体展开图的副本

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Reflection
Translation
Confidence Interval
Trigonometric Functions
Calculus

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