Answer:
1] <A and <B are 'Vertically Opposite Angles'
2] <A and <B are 'Linear Pair'
3] <A and <B are 'Vertically Opposite Angles'
4] <A and <B are 'Vertically Opposite Angles'
5] <A and <B are 'Vertically Opposite Angles'
6] <A and <B are 'Linear Pair'
Hope I got it right!!