Answer:
36
Explanation:
I drew a diagram on paper but cant here soooo....
but math checks out i think.
Angles AOD and COB are both 36.
Angles AOC and DOB are both 144.
DOB has to be 4 times angle COB, right? if so, then:
144 = 4*36. That checks out. Now to see if all the angles combined are 360.
36 + 36 + 144 + 144 =360. It works!
This is my first answer ever btw so if the formatting and grammar is bad im sorry.