Ex : 14 .......................

Ex 14 class=

Răspuns :

COD=COB+BOD; 90°=(BOD-16°)+BOD–>90°=2BOD-16°–>BOD=37°–>BOC=53°; AOE=BOD (opuse la varf)=37°;AOD=180° - DOB=180° - 37°=143°


As vrea coroana!!