Răspunsuri

2014-03-05T13:36:29+02:00
Fie AD=x
DC=2x
din teorema inaltimii
AD^2=BD*DC
BD=AD^2:DC=x^2/2x=x/2
deci BC=2x+x/2=5x/2
BC=3dm
5x/2=3dm
x=6/5dm
deci
AD=6/5dm
DC=12/5 dm