13. Which angle corresponds to <7?

14. Which pair of angles are same-side interior angles?

15. Which angle is congruent to <1?

16. Which angle is not supplementary to <6?

17.Which can be used to prove directly that <1 = <8?

18. M is the midpoint of LN. What is LN?

Look at the paper for better explanation I just copied and pasted sorry