2. Section 1.2 Points, Lines, and Planes

3. Undefined Terms

4. Point Represents “location”; represented with a dot; no shape or size; 0-dimensional

5. Line Represents “straightness”; represented with a straight line with two arrowheads; 1-dimensional

6. Plane Represents “flatness”; represented with a shape that looks like a tabletop; 2-dimensional plane P or plane ABC

7. Other Definitions

8. Collinear Points on the same line.

9. Coplanar Points Points on the same plane.

10. Line Segment A portion of a line.

11. Ray Consists of an initial point and extends in one direction to infinity.

12. Intersection The point(s) two geometric figures have in common

13. Example Draw 3 non-collinear points.

14. Example Sketch the intersection of a plane and a line..

15. Homework pg 13 # 10-42 even, 49, 56-66 even