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等差數列2
Author:
李春培
等差數列2
GeoGebra
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兩組對邊相等的四邊形
【案例】2013年安徽高考15题
画直线等分三角形的面积
兩位數除以一位數（一）
判斷球體
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Euler line 2
求滿足不等式的最大/最小整數
找中點軌跡
Triangle on sphere
繪畫平行四邊形
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Parallelogram
Linear Equations
Line Segment
Square
Arithmetic Operations