The basic figures used in plane geometry: point, line, ray, segment, and an angle.
1. With the labeling provided how many different ways can we the name the line?[br]
2 ways: line BC or line CB
2. With the labeling provided how many different ways can we the name the segment?
two ways: segment DE or segment ED
3. With the labeling provided how many different ways can we the name the ray as illustrated?
4. With the labeling provided how many different ways can we the name the angle?
3 ways: angle JIH, angle HIJ, and angle I.