1. True or False: Intersecting lines are always perpendicular.
2. True or False: Skew lines lie in the same plane.
3. True or False: Perpendicular lines have a slope of 0.
4. If two lines are parallel, what can you say about their slopes?
5. If two lines are perpendicular, what can you say about their slopes?
6. Angles that add up to 90 degrees
7. Angles that add up to 180 degrees
8. Angles ACD, DCE and ECB are
9. Angle g and h are
10. Which equation would be used to solve for x?