Chapter 3 - Parallel and Perpendicular Lines - 3-1 Lines and Angles - Practice and Problem-Solving Exercises - Page 144: 18

$\angle 4$ and $\angle 5$ $\angle 1$ and $\angle 4$ $\angle 3$ and $\angle 2$

For $\angle 4$ and $\angle 5$, the lines are line c and line e and the transversal is line b. For $\angle 1$ and $\angle 4$, the lines are line a and line b and the transversal is line c. For $\angle 3$ and $\angle 2$, the lines are line d and line e and the transversal is line c.