1. Vocabulary Review

2. Space Set of all points.

3. Postulate An accepted statement of fact.

4. Parallel Planes Planes that do not intersect.

5. Segment Part of a line consisting of two endpoints and all the points between them.

6. Axiom An accepted statement of fact.

7. Parallel Lines Coplanar lines that do not intersect.

8. Opposite Rays Two collinear rays with the same endpoint.

9. Ray Part of a line consisting of one endpoint and all the points of the line on one side of the endpoint.

10. Plane Flat surface that has no thickness.

11. Line Series of points that extends in two opposite directions without end.

12. Coplanar Points and lines on the same plane.

13. Collinear Points that lie on the same line.

14. Point A location represented by a small dot and named by a capital letter.

15. Skew Lines Lines that are noncoplanar and do not intersect.