Explanation:
in this graph we r going to see the relation of tge angles so
For angle 1
- it is vertical opposite to <4
- ajecent angle to <2 and < 3
For angle 2
- it is vertical opposite to <3
- ajecent angle to <1 and < 4
For angle 3
- it is vertical opposite to <2
- ajecent angle to <1 and < 4
For angle 4
- it is vertical opposite to <1
- ajecent angle to <2 and < 3
The same is true for the rest of angles.