Răspuns:
Explicație pas cu pas:
a)56+37+127+AOB =360°
AOB =360-56-37-127 =140°
b)
30+x+3x+2x=360°
6x=360-30 =330
x=330:6 =55
3x=3*55 =165°
2x=2*55=110°
c)
x+ x+30 +2x+x-15+145 =360°
5x =360-30+15-145 =200
x=200:5 =40°
x+30 =40+30=70°
2x =2*40 =80°
x-15 =40-15 =25°
