Ex nr 8 va rog frumos

a) AOB adiacent BOC & OB-bisectoare => m(AOB)=m(BOC) => m(BOC)=25°=>m(AOC)=m(AOB)+m(BOC)=50°;
OC-bisectoare AOD=> m(AOC)=m(DOC)=> m(DOC)=50°=>m(AOD)=100°
b) m(AOC)=54° m(BOD)=81°