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拋物線與弦相交的弓形區域
Author:
黃世穎
GeoGebra
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兩組對邊相等和有直角的四邊形
【案例】2013年安徽高考15题
錐體建築師
画直线等分三角形的面积
兩位數除以一位數（二）
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zhengming
丹鳳車追趕題
量角器2
gjc091a27 三角形旋轉
Copy of 梯形
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Optimization Problems
LCM and GCD
Correlation
Similar Triangles
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