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# Maths traingle need help thanks!

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1. Hey guyss
Im really stuck on this question

In a triangle ABC the points D, E, F trisect the sides so that BC = 3 BD, CA = 3 CE,
and AB = 3 AF. Show that triangles ABC and DEF have the same centroid.

Ok so i found the centroid of ABC which is (a-b/3,c/3)
I did this buy plotting the triangle onto a x and y axis and having the coordinates

A(-b,0)
B(a,0)
C(0,c)

now i have to prove that the triangle DEF inside of triangle ABC has the same centroid but im having trouble getting the coordinates of triangle DEF

THANK YOU
2. If im wrong in the previous parts please correct me
3. anyone?

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