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OpenStudy (anonymous):
I'm trying to prove the median concurrency theorem with coordinate geometry. My teacher gave me the coordinates: A(6b,6c); B(0,0); and C(6a,0). I've tried using equations, but every time I do the math, my answers don't match with my teacher's. Help please? With steps? My teacher says the centroid of the triangle should be (2a+2c, 2b). However, I could have copied it wrong.
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