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初中数学压轴大题，整式的规律探究题，为什么学生数不对三角形？
七年级数学压轴大题，整式的规律探究题，为什么学生数不对有多少个三角形？关键在会找规律！
人教版七年级数学，最常考考易错重要知识点、竞赛、综合压轴题247/284
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