Show that the point (-1/2,5/2) is the centre of the circle circumscribing the triangle whose vertices are (0,1), (1,2) and (-2,3).
Last edited by mr fantastic; Jul 2nd 2010 at 10:56 PM. Reason: Re-titled.
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Hi You just need to show that the distances between the point (-1/2,5/2) and each vertex are equal
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