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有规律的图形,有规律的题目,总有对应的妙招去破解.掌握数规律图形中的三角形个数的方法或招数,可以快速准确地说出三角形的数量.
Regular graphics, regular questions, there is always a corresponding coup to crack. The method or trick to grasp the number of triangles in the number regular graph can quickly and accurately say the number of triangles.