1. 1.2 Use Segments and Congruence

2. OBJECTIVE
Find the distance between two points on a line using the Segment Postulate.

3. Question:
What is the distance Between Houston and El Paso? What if I know that Houston – Austin = mi Austin – El Paso = mi.

5. SEGMENT ADDITION POSTULATE
Let points A, B and C be collinear points.
If B is between A and C, then AB + BC = AC*
*AC defines distance, whereas AC defines a segment.

6. GUIDED PRACTICE
1. Use the diagram to find AB.

7. GUIDED PRACTICE
2. Use the diagram to find BC

8. GUIDED PRACTICE
Find DT.

9. GUIDED PRACTICE

10. GUIDED PRACTICE
If: JH=2X JK=3X KH=25 A. Find HJ B. Find JK

11. CONGRUENCE 2 lines that have the same measurement. Congruence symbol:
THUS: AB CD

12. BIG QUESTIONS What is the difference between: AB and AB
AB = CD and AB CD

13. BIG QUESTION
Is AB + BC = AC ? B A C