1. 1.1 Points, Lines and Planes

2. Points are written with an upper case letter.
Dot that marks a location in Space A B
= “Point A”
= “Point B”
Points are written with an upper case letter.

3. Line - Extends forever in two directions = “Line CD” or “Line DC”
written CD or DC
= “Line m”
written m C D m
Lines can be named with the two letters(Upper Case) that lie on the line with a bar with arrows
Or by one lower case cursive letter.

4. Plane - Flat surface that extends indefinitely
= “Plane P”
written P
= “Plane ABC”
written Plane ABC A
B C
Planes can be named with on Upper Case cursive letter
Planes can also be named by 3 points on the plane

5. Collinear - Points that lie on the same line
A B C
T / F A and B are Collinear
T / F A and C are Collinear
T / F A, B and C are Collinear

6. Coplanar - Points that lie on the same Plane
Name 3 Coplanar Points ________
Name 3 Noncoplanar Points _________
T/F C, D and G are coplanar
T/F A, B, E, F are coplanar
T/F A, B, C, E are coplanar
A, C, D
A B
C D G
E F
Not Possible

7. Draw and Label each of the following
n and m intersect at P
p contains N
P contains A and B, but not C
m intersects P at X
P and R intersect at m n P m P A
p N C B m X m
P R P

8. Assignments
Page 9-10 #’s 6-18, 21, 22, 25, 26.