Teacher Note

1
Teacher Note

• When talking about the midpoint, mention that it
  BISECTS the line segment

2
SEGMENT ADDITION POSTULATE

• Unit 9 Notes

3
Vocabulary

• Coordinate- A point that corresponds to one and
  only one number on the ruler.
• Distance- The distance between any two points is
  the absolute value of the difference of the
  coordinates.
• Congruent Segments- segments that have the same
  length. Tick marks used to
• show congruence.

4
Ruler Postulate
5
Ex.1 Finding the length of a segment.

•  

B.
A.
6
NOTATION
 
 
 
 
 
 
 
 
7
Segment Addition Postulate
8
Ex.2 Using the Segment Addition Postulate

• B is between A and C, AC 14, and BC 11.4.
• Find AB.

 
9
Ex.3 Using the Segment Addition Postulate
AC 27 Solve for x.
10
Ex.4 Using the Segment Addition Postulate

• S is between R and T. Find RT.

Practice Find DF.
11
Ex.5 Using the Segment Addition Postulate

•  

 
12
Assignment
Blue Workbook page 4-6 4-6, 11-31 page 7 5-7