In the figure shown, lines 1 and 2 are parallel.

the figure shows two diagonal parallel lines italic l 1 and italic l 2 and a horizontal line italic l 3 cuts the two diagonal lines at different points. on the intersection point on the left, the angle formed on the top left portion is labeled as 1, the angle formed on the top right portion is labeled as 2, the angle formed on the bottom left portion is labeled as 5, and the angle formed on the bottom right portion is labeled as 6. on the intersection point on the right, the angle formed on the top left portion is labeled as 3, the angle formed on the top right portion is labeled as 4, the angle formed on the bottom left portion is labeled as 7, and the angle formed on the bottom right portion is labeled as 8.

the sum of the measures of angles 4 and 5 is
150
°
. what is the measure of angle 1?

a.
30
°
b.
75
°
c.
105
°
d.
115
°