Respostas

2014-03-20T23:56:33-03:00
Ponto médio = (Xa + Xb)/2  , (Ya + Yb)/2

(Xa +Xb)/2= 2 ----> (4+ Xb)/2= 2 -----> 4+ Xb= 4 ---> Xb=0

(Ya+ Yb)/2= 3 ---> (3 + Yb)/2=3 ---> 3+ Yb= 6 ---> Yb= 3

B(0, 3)
4 3 4