6-110. Refer to the diagram at right. Homework Help ✎
If m∠1 = 74º and m∠4 = 3x − 18º, write an equation and solve for x.
If m∠2 = 3x − 9º and m∠1 = x + 25º, write an equation and solve for x. Then determine m∠2.
3x − 18 = 74
3x = 92
x = 30.6°
Disregard your calculations for angle measure from part (a).
Since the lines are parallel, angles 1 and 2 have equal measure.
x = 17°, m∠2 = 42°