Răspuns:
×+10+2x+7+x+15+3x+5+2x+8=360°
9x+45=360
9x=360-45
9x= 315
x=315:9
x=35
AOB= 35+10= 65°
BOC= 2×35+7=77°
COD= 35+15=50°
DOE= 3×35+5=110°
EOA=2×35+8=78°