### Home > CC1MN > Chapter 10 > Lesson 10.3.1 > Problem 10-74

10-74.

If and

*, find the measures of each numbered angle. Then explain how you found each angle, citing definitions and conjectures that support your steps.*

Since two of the lines are parallel, their alternate interior angles and corresponding angles are equal to each other.

Angles 1, 2, and 3 form a straight angle, as do angles 4 and 5 and angles 6 and 7.