1.2 Linear Measure
Today you will
Measure segments
Calculate with measures
Use proper notation to designate a segment and the
measure of a segment
Line Segment:
A part of a line between two endpoints
Example:
WR
R
or
RW
W
Example:
Name 3 different segments:
G E
O
The Length of GE is written as GE. All
measurements include the unit of measure.
Betweenness of Points
G E
O
Point E is between points G and O
if and only if
G, E, and O are collinear and
GE + EO = GO
M
MA = 3.4 in.
AT = 9.3 in.
Find MT
A
T
CA = 18 ft
C
CP = 22 ft
Find AP
A
P
3x - 5
17
N
M
5x + 2
Find NO.
O
Congruent Segments are segments that
have the same measure.
1
m
4c
B
X
A
14
cm
Y
AX = 14 cm
BY = 14 cm
AX = BY
and
AX
BY
Point M is between Points A and T.
AM
MT
If AT = 21, find AM and MT