Question

Pe o dreapta consideram punctele A,B si C si notam cu M,N mijloacele segmentelor AB respectiv BC
Daca AB=7cm si BC=11cm aflati AC si MN

Answer 1

AC= AB +BC =7+11=18
AM = AB/2= 7/2= 3,5
AM=MB
BN= BC/2 =11/2= 5,5
MN = MB+BN =3,5+5,5 = 9 cm

Answer 2

AC= AB +BC =7 cm +11 cm = 18 cm
AM = AB/2= 7/2= 3,5 
AM=MB= 3,5 cm
BN= BC/2 =11/2= 5,5 
MN = MB+BN =3,5 cm + 5,5 cm = 9 cm