the centroid of a triangle whose two vertices are (1,5,-2) and (3,2,7) is (-1,2,3) find the coordinates of third vertices .
Also find the centroid of triangle formed by joining the mid point of given triangle sides

(1+3+x)÷3= -1
(4+x)= -1*3
x= -3-4
x= -7.
similarly find y & z coordinates
  • -5
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