SB Enr Geom 1­4 Completed.notebook
September 12, 2012
Lesson 1­4 Segments, Rays, Parallel Lines and Planes
segment ­ part of a line consisting of two endpoints and all points between them
ray ­ part of a line consisting of one endpoint and all the points of the line on the opposite side of the endpoint
opposite rays ­ two collinear rays with the same endpoint
­ opposite rays form a ______
J
M
K
Q
N
R
S
Aug 21­7:12 PM
Expl 1 Name all segments and rays.
L
P
Q
LP and PL form a line. Are they opposite rays? Why?
Aug 21­7:19 PM
1
SB Enr Geom 1­4 Completed.notebook
September 12, 2012
parallel lines ­ coplanar lines that do not intersect
skew lines ­ lines that do not intersect nor are parallel, noncoplanar
D
A
C
B
H
E
G
F
Aug 21­7:23 PM
Expl 2 ­ In your book.
a. Name all labeled segments that are parallel to DC.
b. Name all labeled segments that are skew to DC.
Ckpt 2.
a. Name all labeled segments that are parallel to GJ.
b. Name all labeled segments that are skew to GJ.
c. Name another pair of parallel segments; of skew segments.
Aug 21­7:28 PM
2
SB Enr Geom 1­4 Completed.notebook
September 12, 2012
parallel planes ­ planes that do not intersect
G
H
A
B
J
I
D
C
Aug 21­7:31 PM
Ckpt 3. Name the figures.
a. three pairs of parallel planes
S
P
b. a line parallel to PQ
Q
R
W
c. a line that is parallel to plane
QRUV
T
V
U
Aug 21­7:36 PM
3
SB Enr Geom 1­4 Completed.notebook
September 12, 2012
Name the segments and rays in the figure.
A
B
C
Aug 21­7:39 PM
Homework
Lesson 1-3
2-48E, 63-66
Aug 21­7:41 PM
4