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quadrilaterals 3

Author:iedc

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四邊形的特性
【案例】2018年全国1卷理科12题
三位數除以一位數（一）
拼砌四邊形
兩組對邊相等的四邊形

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排列組合
餘弦定理
Quiz on Rotation 旋轉變換：測驗
Beemo
erwtewt的副本

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Geometric Transformations
Vectors 2D (Two-Dimensional)
Numbers
Inequalities
Line Segment

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