Answer:
My vote is for choice 3) ∠2, ∠3, ∠6 and ∠7
Explanation:
Each of 2,3,6, & 7, when added to angle 5, add up to 180°
Do supplementary angles have to be adjacent to be supplementary?
No.
Explanation:
The answer is no, as for example:
angles on the same side of a non-parallel sides of a trapezoid and
opposite angles of a cyclic quadrilateral can be supplementary.