(i) 126° + 44° = 170° l is not parallel to m because sum of interior opposite angles should be 180°.
(ii) 75° + 75° = 150° l is not parallel to m because sum of angles does not obey the property of parallel lines.
(iii) 57° + 123° = 180° l is parallel to m due to supplementary angles property of parallel lines.
(iv) 98° + 72° = 170° l is not parallel to m because sum of angles does not obey the property of parallel lines.
