| A | B |
|---|
| point | a single place in space |
| line | a set of points with no endpoints |
| ray | a set of points with one endpoint |
| line segment | a set of points with two endpoints |
| parallel | two lines on the same plane that will never intersect |
| perpendicular | two lines that intersect at a right angle |
| skew | two lines on different planes that will never intersect |
| intersect | meeting at a point |
