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If A(2,3,1), P(3,4,0), Q(3,2,2), and R(1,4,2). let M be the midpoint of QR and T be...

If A(2,3,1), P(3,4,0), Q(3,2,2), and R(1,4,2). let M be the midpoint of QR and T be the point which divides PM in the 2:1.

Explain why T, but A is the centre of thee circle through P,Q,and R.

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