Răspuns:
a)BC2(la a doua )= AC2+AB2=64+36=100 ,BC=10
b)FE2=ED2+DF2 =144+81=225,FE =15
c)HI2=HG2+GI2 =144+256=400=20
2 a)AC2+AB2=BC2 ,256+AB2=400,400-256=144,AB=12
b)NP2+MP2=MN2,625+MP2=225,625-225=400,MN=20
c)SR2+SQ2=RQ2,900+SQ2=576,900-576=324,SQ=18