74. Name the pairs of supplementary angles in the following figures:
(i) ∠AOD, ∠AOC; ∠AOC, ∠BOC; ∠BOC, ∠BOD; ∠AOD, ∠BOD
(ii) ∠POS, ∠SOQ; ∠POR, ∠QOR
(iii) ∠1, ∠2; ∠3, ∠4; ∠5, ∠6
Supplementary angles add up to 180°. All listed pairs satisfy this condition.