At point O, ray OC stands on a straight line AB. This produces two adjacent angles ∠COB and ∠COA.
a. (i) State the relationship between the measures of ∠COB and ∠COA.
b. (ii) Using the statement in part (i), explain why each of the two angles is called the supplement of the other.
c. (iii) Do ∠COB and ∠COA together constitute a linear pair? Give a reason for your answer.