mas∡MON=35°=mas∡AOC/2⇒mas∡AOC=2×mas∡MON=2×35=70°
mas∡AOC=70°
mas∡AOC=mas∡BOC+mas∡AOB
mas∡AOB=10+2mas∡BOC
mas∡AOC=mas∡BOC+mas∡AOB devine
mas∡AOC=mas∡BOC+10°+2mas∡BOC=10°+3mas∡BOC=10°+3
70°=10°+3masBOC⇒3mas∡BOC=70°-10°⇒3mas∡BOC=60°⇒mas∡BOC=60:3=20°
mas∡AOC=mas∡BOC+mas∡AOB
70°= mas∡AOB+20°⇒ mas∡AOB=70-20=50
mas∡AOB=50° iar mas∡BOC=20°