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中考 2019 东城一模-25
Author:
acchu
GeoGebra
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兩組對邊相等的四邊形
畫出對稱圖形
柱體建築師
兩位數加法
兩位數除以一位數（一）
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高二上_圓_圓內一點所有弦的中點軌跡
Vector equation in R2
三角柱(可側轉、上下轉)
y=x sin(1/x) 的圖形
旋轉圓弧
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Quadratic Equations
Sequences and Series
Surface
Mathematics
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