1. What You’ll Learn To identify segments, rays, and lines
7-1 Lines and Planes
What You’ll Learn
To identify segments, rays, and lines

2. Points Points indicates location A point has no size
You name a point by a capital letter
A .
point A

3. Lines
A line is a series of points that extend in to opposite directions without end.
A line is named by any two points on the line or by a lowercase letter
A n B

4. Ray
A ray is a part of a line with one endpoint and all the points of the line on one side of the end point.
A ray is named using two points, starting with the endpoint
A B

5. Segment
A segment is a part of a line with two endpoints and all points in between.
A segment is named by its endpoints
A B

6. Intersecting, Parallel, and Skew
Plane is a flat surface that extends indefinitely in all directions and has not thickness
Intersecting lines have exactly one point in common
Parallel lines are lines in the same plan that never intersect.
Parallel segments and rays lie in parallel lines
Skew lines lie in different planes. They are neither parallel nor intersect

7. How can we apply this picture to Geometry?

8. Architecture: use the information in the photograph answer the given questions
E F
A B C
G H D

9. Answer the following questions about the diagram
Name a segment
Name a point
Name a plane
Name two parallel lines
Name two perpendicular lines
Names two skew lines
Assign text page #1-14;23 & 24
Assign Pr 7-1