1. 2.1 Segment Bisectors Goal:
Bisect a segment and find the coordinates of the midpoint of a segment.

2. Key Words Midpoint Bisect Segment Bisector
Point on a segment that divides it into two congruent segments.
Bisect
To divide a segment or angles into two congruent parts. (to cut in two)
Segment Bisector
A segment, ray line, or plane that intersects a segment at its midpoint.

3. Find Segment Lengths
M is the midpoint of AB. Find AM and MB. 26 A M B

4. Find Segment Lengths
P is the midpoint of RS. Find PS and RS. R 7 P S

5. Use Algebra with Segment Lengths
Line m is a segment bisector of AB. Find the value of x. m A M B 5X 35

6. The Midpoint Formula
The coordinates of the midpoint of a segment are the averages of the x-coordinates and the y-coordinates of the endpoints.

7. Use the Midpoint Formula
Find the coordinates of the midpoint of AB
A(1, 2), B(7, 4)
A(-2, 3), B(5, -1)

8. Homework
2.1 pg. 56
12-34 Even