Answer:
105°
Step-by-step explanation:
m(15) = 75°
Also it's given that m||n . So taking y as transversal ,
m(15) = m(13) = 75°
Also it's given that x||y . So taking m as transversal ,
m(13) = m(5) = 75°
Now m(5) & m(1) are linear pair. So ,
m(5) + m(1) = 180°
=> 75° + m(1) = 180°
=> m(1) = 180° - 75°
= 105°
