Question 1173230
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Take the average of x-coordinates of the three given points

    {{{x[c]}}} = {{{(1+(-5)+(-1))/3}}} = -1 {{{2/3}}} = -1.667  (rounded).



Take the average of y-coordinates of the three given points

    {{{y[c]}}} = {{{(4+2+(-4))/3}}} = {{{2/3}}} = 0.667   (rounded).



Then the coordinates of the centroid are  

    {{{x[c]}}} = -1 {{{2/3}}} = -1.667,   {{{y[c]}}} = {{{2/3}}} = 0.667.



In other words, the centroid is the point  

    ({{{x[c]}}},{{{y[c]}}}) = (-1.667,0.667).
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