Answer:

i): ∠BOC and ∠AOD are obtuse vertically opposite angles.

ii): ∠AOB and ∠AOE are adjacent complementary angles.

iii): ∠EOB and ∠EOD are equal supplementary angles.

iv): ∠EOA and ∠EOC are unequal supplementary agnles.

v): ∠AOB and ∠AOE, ∠AOE and ∠EOD, ∠EOD and ∠COD are adjacent angles but do not form a linear pair.