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Author:
曾己泉
三角形性質
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畫出對稱圖形
算柱 (兩位數)
異分母分數減法
兩組對邊相等的四邊形
【案例】2018年全国1卷理科12题
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內擺線
工具箱
winter vacation homework 3
Is this a prism 1
三角形全等的直观图(可重合).许兴华数学
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Correlation
Difference and Slope
Kite
Sequences and Series
Circumcircle or Circumscribed Circle