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Lines line segments rays and angles
This document defines and describes basic geometric terms including lines, line segments, rays, angles, and the relationships between them. It defines a line as extending indefinitely in both directions, a line segment as having two endpoints, a ray as having one endpoint and extending in one direction, and defines right, acute, and obtuse angles. It also describes parallel and perpendicular lines as well as vertices where lines or rays meet to form angles.
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Introduction to lines, line segments, rays, and definitions of each with distinctions.
Explanation of parallel lines, intersecting lines, and perpendicular lines.
Definitions and examples of right angles, acute angles, and obtuse angles.
Practice questions on identifying figures, types of lines, and angles.
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Lines line segments rays and angles
- 1. Lines, Line Segments,Rays and Angles
- 2. What is aLine? • A line is a straight path that goes on forever in both directions. (There are arrows on both sides)
- 3. What is aline segment? . . • A line segment is part of a line that has two endpoints. (There are periods at the ends telling you when to stop)
- 4. What is aray? • A ray is a part of a line that has one endpoint and goes on forever in one direction. (One period and one arrow)
- 5. What are parallellines? • Parallel lines are lines that never intersect. (They Don’t Cross)
- 6. What is avertex? • A vertex is the point at which two lines or rays meet to form an angle. • More than one vertex are called vertices.
- 7. What are intersectinglines? • Lines that cross at any point are intersecting lines.
- 8. What are perpendicular lines? •Two lines that cross to form a right angle are intersecting lines.
- 9. What is aright angle? • A right angle is an angle that measures 90 degrees and forms a square.
- 10. What is anacute angle? • An angle that measures less than 90 degrees. • “A cute little angle”
- 11. What is anobtuse angle? • An obtuse angle is an angle that measures more than 90 degrees.
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- 16. What type oflines are these? . .
- 17. What type oflines are these?
- 18. What type oflines are these?
- 19. What type oflines are these? • More than one vertex are called vertices.
- 20. What type oflines are these?
- 21. What type oflines are these?
- 22. What type ofangle is this?
- 23. What type ofangle is this?
- 24. What type ofangle is this?