Vocabulary

1. Vocabulary A definition is comprised of a category or classification and a critical attribute. The critical attribute is the thing that makes one definition different from another definition.

2. Vocabulary List 1 • Line segment 7. Non-coplanar • Ray 8. Parallel lines • Space 9. Perpendicular lines • Collinear 10. Skew • Non-collinear 11. Postulate • Coplanar 12. Theorem

3. Rayis part of a line that consist of a point called an endpoint and all points on a line that extend into one direction. • What is the category? • What is the critical attribute?

4. Ray • What is the category? part of a line • What is the critical attribute? endpoint and all points that extend on the line that extends in one direction

5. Line Segmentis part of a line that consist of two points called endpoints and all the points in between the two endpoints. • What is the category? • What is the critical attribute?

6. Line Segment • What is the category? part of a line • What is the critical attribute? consist of two points called endpoints and all the points in between those two endpoints.

7. Collinearis a set of points that all line on the same line • What is the category? • What is the critical attribute?

8. Collinear • What is the category? A set of points • What is the critical attribute? on the same line

9. Non-collinearis a set of points that do not all lie on the same line • What is the category? • What are the critical attributes?

10. Non-collinear • What is the category? Set of points • What are the critical attributes? not on the same line

11. Spaceis a set of all points , boundless and three dimensional • What is the category? • What are the critical attributes?

12. Space • What is the category? set of points • What are the critical attributes? boundless and three dimensional

13. Coplanaris a set of points or lines that lie on the same line • What is the category? • What are the critical attributes?

14. Coplanar • What is the category? set of points or lines • What are the critical attributes? that lie in the same plane

15. Non-coplanaris a set of points or lines that do not lie in the same plane. • What is the category? • What are the critical attributes?

16. Non-coplanar • What is the category? set of points or lines • What are the critical attributes? do not lie in the same plane

17. Parallel Linesare two coplanar lines that do not intersect • What is the category? • What are the critical attributes?

18. Parallel Lines • What is the category? coplanar lines • What are the critical attributes? lines that do not intersect

19. Perpendicular Linesare lines that intersect to form a right angle • What is the category? • What are the critical attributes?

20. Perpendicular Lines • What is the category? coplanar lines • What are the critical attributes? lines that intersect to form a right angle

21. Skew Linesare two non-coplanar lines that do not intersect • What is the category? • What are the critical attributes?

22. Skew Lines • What is the category? non-coplanar lines • What are the critical attributes? lines that do not intersect

23. Postulateis a rule that is accepted with proof.(also called an assumption or an axiom) • What is the category? • What are the critical attributes?

24. Postulate • What is the category? a rule • What are the critical attributes? accepted without proof

25. Theoremis a rule that can and must be proved . • What is the category? • What are the critical attributes?

26. Theorem • What is the category? a rule • What are the critical attributes? must be proved