Question

pe o dreapta se aleg 4 puncte A,B,C,D in aceasta ordine .Stiind ca lungimile segmentelor [AB],[BC] si [CD] sunt exprimate in cm prin 3 numere naturale consecutive si AC = =33 cm , calculati lungimea segmentelor [CD] si [AD] ????

Answer 1

AB=a-1, BC=a, CD=a+1                  I__a-1___I____a____I__a+1_______I
AC=AB+BC=a-1+a=2a-1=33          A            B                 C                       D
2a-1=33, 2a=34,, a=17
CD=a+1=18
AD=AC+AD=33+18=51