Lines l and m are parallel. lines t^1 and t^2 are transversals. what is m< 1 if m< 4=65*? justify your answer. (ps- there isn’t any options)

The complete question in the attached figure

we know that
m∡4=65°
m∡4=m∡2---------> by internal alternate angles
m∡5=m∡3---------> by internal alternate angles

m∡1=180°-m∡2---------> 180°-65°--------> m∡1=115°

the answer is 
m∡1=115°