Respuesta :

animelizannb
DOC =110 because vertically opposite angles are equal
DCO= 180-110= 70/2= 35 since base angles of an isosceles triangle are equal
y= 35°
110+110= 220
360-220= 140
COB= 140/2= 70
180-70= 110
x= 110/2
x= 55°