Llelogram. (Examples 1 and 2)
nits
2.
3.
10 ft
5 ft)

 ∠2 and ∠8, ∠5 and ∠6

Step-by-step explanation:

Supplementary angles are angles that equal up to 180°. ∠2 and ∠8 are supplementary based on the alternate exterior angles theorem, meaning ∠2 is the same as ∠7, and ∠7 and ∠8 are supplementary because they're a linear pair. ∠5 and ∠6 are supplementary because they are a linear pair.