Odpowiedź :
[tex]A=(5,-2) \ i \ B=(-3,7)\\\\S_{|AB|}=(\frac{5+(-3)}{2},\frac{-2+7}{2})=(\frac{2}{2},\frac{5}{2})=(1,2\frac{1}{2})[/tex]
[tex]A=(5,-2) \ i \ B=(-3,7)\\\\S_{|AB|}=(\frac{5+(-3)}{2},\frac{-2+7}{2})=(\frac{2}{2},\frac{5}{2})=(1,2\frac{1}{2})[/tex]