Vocabulary

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.

Vocabulary List 1

1. Line segment 7. Non-coplanar2. Ray 8. Parallel lines3. Space 9. Perpendicular lines4. Collinear 10. Skew5. Non-collinear 11. Postulate6. Coplanar 12. Theorem

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?

• 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

Ray

• What is the category?

• What is the critical attribute?

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? part of a line

• What is the critical attribute? consist of two points called endpoints and all the points in between those two endpoints.

Line Segment

Collinearis a set of points that all line on the same line

• What is the category?

• What is the critical attribute?

Collinear

• What is the category? A set of points

• What is the critical attribute? on the same line

Non-collinearis a set of points that do not all lie on the same

line

• What is the category?

• What are the critical attributes?

Non-collinear

• What is the category? Set of points

• What are the critical attributes? not on the same line

Spaceis a set of all points , boundless and three

dimensional

• What is the category?

• What are the critical attributes?

Space

• What is the category? set of points

• What are the critical attributes? boundless and three dimensional

Coplanaris a set of points or lines that lie on the same

line

• What is the category?

• What are the critical attributes?

Coplanar

• What is the category? set of points or lines

• What are the critical attributes? that lie in the same plane

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?

Non-coplanar

• What is the category? set of points or lines

• What are the critical attributes? do not lie in the same plane

Parallel Linesare two coplanar lines that do not intersect

• What is the category?

• What are the critical attributes?

Parallel Lines

• What is the category? coplanar lines

• What are the critical attributes? lines that do not intersect

Perpendicular Linesare lines that intersect to form a right angle

• What is the category?

• What are the critical attributes?

Perpendicular Lines

• What is the category? coplanar lines

• What are the critical attributes? lines that intersect to form a right angle

Skew Linesare two non-coplanar lines that do not intersect

• What is the category?

• What are the critical attributes?

Skew Lines

• What is the category? non-coplanar lines

• What are the critical attributes? lines that do not intersect

Postulateis a rule that is accepted with proof.

(also called an assumption or an axiom)

• What is the category?

• What are the critical attributes?

Postulate

• What is the category? a rule

• What are the critical attributes? accepted without proof

Theoremis a rule that can and must be proved .

• What is the category?

• What are the critical attributes?

Theorem

• What is the category? a rule

• What are the critical attributes? must be proved