Defining Lines, Rays, and Segments
This lecture series defines the simplest geometric shapes: lines and rays. Watch the videos and complete the interactive exercises.
Practice
Identify points, lines, line segments, rays, and angles - Answers
1. The figure is a ray.
2. 
3. The figure is a ray.
4. 
5. None of the definitions describe the figure.
6. None of the figures show a line that is perfectly straight, starts at one point, and ends at another point.
7. None of the definitions describe the figure.