Question

if (1, 1, 1) is the centroid the
with (3, 5, 7)
(-1,7 -6) as the two vertices
find third vertex
triangle
1​

Answer 1

Answer:

(1,-9,2)

Step-by-step explanation:

let third vertex be (x,y,z)

x+3-1/3= 1

x+2=3

x=1

y+5+7/3=1

y+12=3

y=-9

z+7-6/3=1

z+1=3

z=2

therefore third vertex is (1,-9,2)

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