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My second work
Author:
郭致伸
GeoGebra
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兩組對邊相等的四邊形
拼砌四邊形
異分母分數減法
【案例】2013年安徽高考15题
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挑战中考压轴题1.1.3
圖二
分解三棱柱
切割任意四邊形再拼砌成矩形
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