tolong dibantu soalnya yaa!!

a) 1) <AOC bertolak belakang dgn <DOB
. 2) <AOD bertolak belakang dgn <BOC

b) <DOB = <AOC
. <DOB = 35°

. <AOD = 360°-70°
. <AOD = 290°/2 = 145°

. <BOC = <AOD
. <BOC = 145°

MAAF KALAU SALAH;)