Answer:
60??
Explanation:
so the measure of a full circle is 360, so if its a half circle it is 180, and its divided into 3 sections( the porblem is if there not even sections this is wrong, i cant tell if they are or not) so you do 180 divided by 3 and your answer is 60. if there are uneven sections all you have to do it take your protractor and line up the stright line with the bottom line then see what small number is the line pointing too. Sorry if this dosent make sense i can try to clarifi if you dont get it.