Respostas

2014-02-18T22:27:55-03:00
A) xm= (xa + xb)/2 ym= (ya + yb)/2
xm= (2 + (-4))/2 ym= (0 + 3)/2
xm= -2/2 = -1 ym= 3/2 = 1,5

Ponto médio: Pm(-1 ; 1,5)

b) xm= (xa + xb)/2 ym= (ya + yb)/2
xm= (3 + 1)/2 ym= (2 + (-2))/2
xm= 4/2 = 2 ym= 0/2 = 0

Ponto médio: Pm(2 ; 0)