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20200417平面直角坐标系复习T14（3）
Author:
陈敦莹
GeoGebra
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畫出對稱圖形
長方體平面投影 (Codex版)
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美國國旗 (Codex 版)
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waaachen
ｔｅｓｔ
Question 1(Angle)
自學材料_兩位數乘兩位數
平面直角坐标系的构成
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Derivative
Trigonometry
Difference and Slope
Arithmetic Mean
Prism