### Home > GC > Chapter 3 > Lesson 3.2.1 > Problem 3-50

3-50.

Consider the following arrow diagram:

*Lines are parallel → alternate interior angles are equal.*

Write this arrow diagram as a conditional (“If…, then…”) statement.

If lines are parallel, then alternate interior angles are equal.

Write a similar conditional statement about corresponding angles, then write it as an arrow diagram.

“If lines are parallel, then corresponding angles are equal” and “Lines are parallel

corresponding angles are equal.”