Respuesta :


[tex]length = \sqrt{{(x1 - x2)}^{2} + {(y1 - y2)}^{2} } \\ = \sqrt{ {(8 - 8)}^{2} + {( - 2 - 4)}^{2} } \\ = \sqrt{ {( - 6)}^{2} } \\ = \sqrt{36} \\ = 6 \\ therefore \: length \: of \: a \: side \: of \: the \: square \: is \: 6 \: units[/tex]