A) \[(7,\,9),\,(-3,\,-7),\,(1,\,1)\]
B) \[(-3,\,-7),\,(1,\,1),\,(2,\,3)\]
C) \[(1,\,1),\,(2,\,3),\,(-5,\,8),\]
D) None of these
Correct Answer: A
Solution :
\[\frac{{{x}_{1}}+{{x}_{2}}}{2}=2,\,\,\frac{{{x}_{2}}+{{x}_{3}}}{2}=-1,\,\,\frac{{{x}_{3}}+{{x}_{1}}}{2}=4\] \[{{x}_{1}}=7,\,\,{{x}_{2}}=-3,\,\,{{x}_{3}}=1\] Similarly \[{{y}_{1}},\,\,{{y}_{2}},\,\,{{y}_{3}}\] can be found.
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