Question

Priviti desenul:
........A..........B..................C..........D....
SI COMPLECTATI PT A OBTINE PROPOZITI ADEVARATE:
a)AB+BC=.....,
b)AD-AB=.....,
c)BC+CD=.....,
d)AC-BC=.....,
e)AB+BC+CD=.....,
f)AD-(BC+CD)=.....,
Desenati punctele A B C D coliniare in aceasta ordine astfel incat AB=2 cm BC=3 CD=4 CM.Calculati lungimea segmentelor [AC] [AD] [BD]
DAU CORONITA

Answer 1

AB+BC=AC
AD-AB=BD
BC+CD=BD
AC-BC=AB
AB+BC+CD=AD
AD-(BC+CD)=AD-BD=AB
..=1cm
...A......B........C..........D...
AB+BC=AC=2+3=5cm
AC+CD=AD=5+4=9cm
AD-AB=9-3=6cm=BD
sper ca te-am ajutat