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Author:
johnmayhk
GeoGebra
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兩組對邊相等和有直角的四邊形
找出對稱軸
兩位數除以一位數(二)
【案例】2013年安徽高考15题
画直线等分三角形的面积
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大樂透開獎機(由小號到大號)
speed
LA 空間中的直線
Orthocentre
双曲线的定义
Discover Topics
Quadratic Equations
Geometric Mean
Logic
Parabola
Isosceles Triangles