Lines can be straight paths that extend indefinitely in both directions or parts of lines with two endpoints. Points specify exact positions, while intersecting lines cross at one point and parallel lines never cross. Line segments are finite parts of lines defined by two endpoints.

1. Lines andLine Segments

2. Line A straight path that is endless in both directions

3. Point An exact position

4. Line Segment Part of a line with two endpoints

5. Ray Part of a line that is endless in one direction

6. Intersecting Lines Lines that cross at one point

7. Parallel Lines Lines that NEVER cross