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Author:
chen mingchuan
GeoGebra
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兩組對邊相等的四邊形
画直线等分三角形的面积
【案例】2013年安徽高考15题
柱體建築師
兩位數加法
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立體展開圖
畢氏定理
拋物線2-焦點法
弦心距
翰林數學_2下_CH3-1_三角形的內角與外角
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Trapezoid
Constructions
Polynomial Functions
General Quadrilateral
Cone