Answer:
coa=90
cob=23
bda=274
ea=90
abe=157
de=90
ce=180
Step-by-step explanation:
for coa it's a 90 dagree angle
for cob= it's 23 90-67=23
for bda= you take the half and see that it's 180 so you add 180 and 67 and get 274 because a whole circle is 360degrees
for ea again it's 90 degrees
for abe it's the 180 again
for de it's the 90 again
for ce it's just half a circle so it's 180
