Q.10 Indicate which pairs of angles are:
(i) Vertically opposite angles
(ii) Linear pairs

Answer :

(i) Vertically opposite angles are angle1 and angle 4,
\(\angle \) 5 and (\(\angle \) 2 + \(\angle \) 3)
(ii) Linear pairs are
\(\angle \) 1 and \(\angle \) 5, \(\angle \) 5 and \(\angle \) 4