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dse13

Author:Pokman Cheng

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【案例】2018年全国1卷理科12题
拼砌四邊形
四邊形的特性
兩位數除以一位數（二）
球體建築師

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掃描不等式 (講義版)
橢圓的切線作圖
tan900
拋物線2-焦點法
微分量 (Differentials)

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Statistics
Constructions
Square
Means
Congruence

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