Răspuns:
2)<(AOB)= <(AOC)+<(COB)
180°=<(AOC)+60°
<(AOC)=120°
masura arcului=120
1) <(AOB)+<(BOC)+<(AOC)=360°
<(AOB)=<(BOC)=<(AOC)=x
3x=360=> x=120
<(AOB)=120
arcul=120
succes la scoala :)
(sper ca e corect, nu am mai făcut de mult)
