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Q.14 In the given figure, name the following pairs of angles.

(i) Obtuse vertically opposite angles.
(ii) Adjacent complementary angles.
(iii) Equal supplementary angles.
(iv) Unequal supplementary angles.
(v) Adjacent angles but do not form a linear pair.
Answer :

(i) \(\angle \)BOC and \(\angle \)AOD are obtuse vertically opposite angles.
(ii) \(\angle \)AOB and \(\angle \)AOE are adjacent complementary angles.
(iii) \(\angle \)EOB and \(\angle \)EOD are equal supplementary angles.
(iv) \(\angle \)EOA and \(\angle \)EOC are unequal supplementary angles.
(v) \(\angle \)AOB and \(\angle \)AOE, \(\angle \)AOE and \(\angle \)EOD, \(\angle \)EOD and \(\angle \)COD are adjacent angles but do not form a linear pair.