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Author:
tan90t
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GeoGebra
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近似值:有效數字
兩位數加法
拼砌四邊形
兩組對邊相等和有直角的四邊形
【案例】2018年全国1卷理科12题
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黃金螺線80235康瀚螢橋國中
給錐體一個名字 3
利用對摺找內心
拋物線1-焦點法
Addition and Subtraction of Directed Numbers (1)
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Quadrilaterals
Trigonometry
Coordinates
Rhombus
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