The document defines key geometric terms including lines, points, line segments, rays, parallel lines, and perpendicular lines. It provides examples of each term and includes diagrams for students to identify whether shapes represent parallel lines, perpendicular lines, or intersecting lines. It also includes diagrams for students to identify as points, lines, line segments, or rays.

1. Parallel lines,
Perpendicular lines,
and line segments
By: Mr. Dunkleberger
Mechanicsville Elementary School

2. What is a line?
• Line- a straight path in a plane that goes
on forever in opposite directions
Example:
• line AB or line BA

3. What is a point?
• point
• An exact location in space, usually
represented by a dot
Example:
point A

4. What is a line segment?
• line segment
• A part of a line that includes two points,
called endpoints, and all of the points
between them
Example:
• line segment AB or line segment BA

5. What is a ray?
• ray
• A part of a line, with one endpoint, that
continues without end in one direction
Example:
ray CD

6. What is a parallel line?
• parallel lines
• Lines in a plane that never intersect
Example:

7. What is a perpendicular line?
• perpendicular lines
• Two lines that intersect to form four right
angles
Example:

9. ray

10. .
point

11. line segment

12. angle

13. line

14. right angle

15. obtuse angle

16. acute angle

17. parallel lines

18. intersecting
lines

19. perpendicular

20. Is the following shape a parallel line, a
perpendicular line, or an intersecting line?

21. Is the following shape a parallel line, a
perpendicular line, or an intersecting line?

22. Is the following shape a parallel line, a
perpendicular line, or an intersecting line?

23. Is the following shape a parallel line, a
perpendicular line, or an intersecting line?

24. Is the following shape a parallel line, a
perpendicular line, or an intersecting line?

25. Is the following shape a parallel line, a
perpendicular line, or an intersecting line?

26. Is the following shape a parallel line, a
perpendicular line, or an intersecting line?

27. Is the following shape a parallel line, a
perpendicular line, or an intersecting line?

28. Is the following a point, a line, a line
segment, or a ray?

29. Is the following a point, a line, a line
segment, or a ray?

30. Is the following a point, a line, a line
segment, or a ray?

31. Is the following a point, a line, a line
segment, or a ray?

32. Is the following a point, a line, a line
segment, or a ray?

33. Is the following a point, a line, a line
segment, or a ray?

34. Is the following a point, a line, a line
segment, or a ray?