Respuesta :
AC = 12
BC = 18
DF = 10
DF : AC = 5 : 6
EF : BC = 5 : 6
(5/6)*18 = 15
EF = 15
BC = 18
DF = 10
DF : AC = 5 : 6
EF : BC = 5 : 6
(5/6)*18 = 15
EF = 15