I have the coordinates of 3 different triangles and I have to be able to find out the coordinates of the circumcenter, orthocenter or centroid. The first one is: A(2,3) B(11,12) C(14,5) Centroid=(?,?) Second: D(-3,6) E(-12,3) F(-16,9) Circumcenter=(?,?) Third: H(-13, -3) O(-2,-4) T (-5,-11) Orthocenter=(?,?) I am not sure how i would find the equation [...]