1. Measuring Segments
Chapter 1.4

2. Postulate: a statement that is assumed to be true.
Vocabulary:
Postulate: a statement that is assumed to be true.
Postulate 1-2: Segment Addition Postulate states that if Q is between P and R, then PQ + QR = PR.
If PQ + QR = PR, the Q is between P and R. P Q R

3. Find QR. 80 P Q R 20 ?

4. Find PR. ? P Q R 37 73

5. Find QR. 30 P Q R
6x - 5
2x + 3

6. Find PQ. 21 P Q R
3x - 1
2x - 3

7. Pythagorean Theorem: a² + b² = c²
Find the distance from A(1,2) to B(6,7).

8. Pythagorean Theorem: a² + b² = c²
Find the distance from A(-6,-6) to B(6,-1).

9. Distance Formula: d= √ (x –x )² + (y – y )²2 1 2 1
Find the distance from A(-6,-6) to B(6,-1).

10. Distance Formula: d= √ (x –x )² + (y – y )²2 1 2 1
Find the distance from A(-4,5) to B(5,-3).