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【案例】2013年安徽高考15题
三位數除以一位數（一）
錐體建築師
第八周作业
異分母分數減法
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用面積逼近圓周率
Apollonius Problem gergonne 2
三角比的性質
正方体展开图的副本
环形跑道问题案例的制作
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Straight Lines
Intersection
Pyramid
Trigonometric Functions
Similar Triangles