What is the centroid of a triangle with corners at #(2 ,1 )#, #(9 ,3 )#, and #(5 , 7 )#?

Question

What is the centroid of a triangle with corners at #(5, 1)#, #(4, 9)#, and #(7,2)#?
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What is the centroid of a triangle with corners at #(3, 1 )#, #(5, 2 )#, and #(12 , 6 )#?
What is the centroid of a triangle with corners at #(3, 2 )#, #(5,5 )#, and #(12 , 9 )#?
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What is the centroid of a triangle with corners at #(2, 7 )#, #(1,5 )#, and #(7 , 5 )#?

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Answer 1 · 2016-07-07T10:03:34

#(5 1/3,3 2/3)#.

The coordinates of the centroid are just the average of the coordinates of the vertices.