For any triangle T in the xy-plane, the center of T is defined to be the point whose x-coordinate is the average of the x-coordinate of the vertices of T and whose y-coordinate is the average of the y-coordinates of the vertices of T.If a certain triangle has vertices at the points (0,0) and (6,0) and center at the point (3,2), what are the coordinates of the remaining vertex?
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发表于 2010-1-12 21:23:45
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