Question

determine o baricentro do triangulo (2,1), (4,-3) e (-2,-5).

Answer 1

dadas as coordenadas do baricentro (Xg ; Yg), teremos: 
Xg = (Xa+Xb+Xc)/3          e Yg = (Ya+Yb+Yc)/3

Xg = (2+4-2)/3         e     Yg=(1-3-5)/3

Xg = 4/3        e Yg = -7/3

(4/3 ; -7/3)