The document defines key geometric concepts such as points, lines, line segments, rays, and planes. A point represents a location in space with no dimension, while lines extend endlessly and line segments are bounded parts of lines. It also prompts the reader to name specific rays and line segments in provided figures.

2. Basic Geometric Ideas

3. Point
.
A point is a location in space that has no dimension, and is
represented by a dot.

4. Line
A line is collection of points which extends endlessly
in both directions

5. Line Segment
A line segment is a part of a line that is bounded by
definite points

6. Rays
•A ray is a part of a line.
•It has a starting point and extends endlessly in one
direction.

8. Plane
• A plane is a flat surface with no thickness.
• It extends endlessly in all directions.

11. Write two different names for the ray highlighted
in red in the diagram below:

13. Identify and name of line segments
and rays in each of the following
figures :