Missing problem for Book CC3 => Chapter Ch9 => Lesson 9.1.1 => Problem 9-8
Created from orphaned homework help problem
Angle 1 and angle 2 are alternate interior angles.
When the lines are parallel, alternate interior angles have equal measures.
Disregard your calculations for angle measure from part (a).
3x − 18 = 74
3x = 92
x = 30.6°
Since the lines are parallel, angles 1 and 2 have equal measure.
x = 17°, m∠2 = 42°