Răspuns:
Explicație pas cu pas:
f)BOC=AOD=4x
OE= bisect BOA=> BOE=EOA=BOA:2=x
BOA=DOC=2x
BOC+AOD+BOA+DOC=360 de grade
12x=360 de grade
x=30 de grade
BOC=AOD=120 de grade
BOA=DOC=60 de grade
g)
AOD=BOE+EOC=90+35=125 de grade
BOA=COD
BOA+COAD+AOD+BOC=360 de grade
BOA+BOA=110 grade
BOA=55 de grade=COD
h)OF= bisect BOA=> AOF=FOB=28 de grade
COD=BOA
BOA=AOF+FOB=28+28=56 de grade=COD