Răspuns :
a)x=360-100=260 : 2 = 130 + 10 = 140
=> AOB= 140*
b) Daca DOB= 90*
DOC= AOB-80= 60*
BOC= 90-60= 30*
=> AOB= 140*
b) Daca DOB= 90*
DOC= AOB-80= 60*
BOC= 90-60= 30*