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1-2 Linear Measure
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Vocabulary
 Line
Segment- unlike a line, a segment can be
measured because it has 2 endpoints
 Betweenness
of points- There is always a point
that lies between two other points on any line
 Congruent
Segments- segments that have the
same measure
 Constructions-
methods of creating geometric
figures without the benefit or measuring tools
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Examples
1 and 11/16 inches
4 and 1/5 cm
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Examples

Find the measure of each segment:
18.4 + 4.7 = 23.1 cm
3 1 19 5
2 1  
8 4 8 4

100 - 89.6
= 10.4 cm
19 10 29
  
8 8
8
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Practice
5 ½ cm
2 ¼ in
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Practice
1 + 1 ¼ = 2 ¼ in
4.9 + 5.2 = 10.1 cm
15 – 9.7 = 5.3 mm
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Examples
K
J
 6. JK
L
= 6x , KL = 3x , JL = 27
JK + KL = JL
6x +3x = 27
9x = 27
x=3
 7. Are
the following congruent?
Yes, because of the single
tic marks on each
segment
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Practice
K
J
 6. JK
= 2x, KL = x+2 , JL = 5x-10
JK + KL = JL
2x +x+2 = 5x-10
3x + 2= 5x – 10
12 = 2x
6=x
 7. Are
the following congruent?
No, TU is 2 ft, SW is 3 ft
L