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三角形外角和=360⁰
Author:
李春培
三角形外角和=360⁰
GeoGebra
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【案例】2018年全国1卷理科12题
兩組對邊相等和有直角的四邊形
三位數除以一位數（二）
柱體建築師
畫出對稱圖形
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n 次方根
math1
Sequence指令練習(二維3)
題六
Ex5C#13
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Continuity
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