SOLUTION: if (2,4) is the location of the centroid of a triangle. which CANNOT be the coordinates of the verticles of the triangle? F= (0,0),(0,6),(6,6) G=(3,4),(3,-2),(0,6) H= (3,-2),(

Algebra ->  Triangles -> SOLUTION: if (2,4) is the location of the centroid of a triangle. which CANNOT be the coordinates of the verticles of the triangle? F= (0,0),(0,6),(6,6) G=(3,4),(3,-2),(0,6) H= (3,-2),(      Log On


   



Question 150643: if (2,4) is the location of the centroid of a triangle. which CANNOT be the coordinates of the verticles of the triangle?
F= (0,0),(0,6),(6,6)
G=(3,4),(3,-2),(0,6)
H= (3,-2),(1,6),(2,8)
J= (2,0) ,(1,8),(3,4)

Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
The equation for the centroid of a triangle using the vertices coordinates is,
(x%5Bc%5D,y%5Bc%5D)=(%281%2F3%29%28x%5B1%5D%2Bx%5B2%5D%2Bx%5B3%5D%29,%281%2F3%29%28y%5B1%5D%2By%5B2%5D%2By%5B3%5D%29)
or the coordinates must make,
%281%2F3%29%28x%5B1%5D%2Bx%5B2%5D%2Bx%5B3%5D%29=2
%281%2F3%29%28y%5B1%5D%2By%5B2%5D%2By%5B3%5D%29=4
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Let's look at each case,
F= (0,0),(0,6),(6,6)
x:%281%2F3%29%280%2B0%2B6%29=2
y:%281%2F3%29%280%2B6%2B6%29=4
Set F can be the coordinates, they match the centroid coordinates(2,4).
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G=(3,4),(3,-2),(0,6)
x:%281%2F3%29%283%2B3%2B0%29=2
y:%281%2F3%29%284-2%2B6%29=8%2F3
Set G cannot be the coordinates, they do not match the centroid coordinates(2,4).
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.
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Let's verify the other two.
H= (3,-2),(1,6),(2,8)
x:%281%2F3%29%283%2B1%2B2%29=2
y:%281%2F3%29%28-2%2B6%2B8%29=4
Set H can be the coordinates, they match the centroid coordinates(2,4).
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.
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J= (2,0) ,(1,8),(3,4)
x:%281%2F3%29%282%2B1%2B3%29=2
y:%281%2F3%29%280%2B8%2B4%29=4
Set J can be the coordinates, they match the centroid coordinates(2,4).