1. Measuring and Constructing Segments
Geometry
Farris 2015

2. I can find the length and midpoint of a segment and construct midpoints and congruent line segments.

3. Coordinate
A point that corresponds to one and only one number.
Postulate (Ruler Postulate)
The points on a line can be put into a one-to-one correspondence with the real numbers.

4. Construction
A way of creating a figure that is more precise. An example is constructing a geometric figure using a compass and straightedge.

5. Copy a SEGment

6. Postulate 1-2-2 (Segment Addition Postulate)
If B is between A and C,
Then AB + BC = AC
A B C . . .

7. B is between A and C. AC = 12, and BC = 8. Find AB.
Let’s Do It!
B is between A and C. AC = 12, and BC = 8. Find AB.
AC = AB + BC
Seg. Add. Post
12 = AB + 8
Substitute 12 for AC and 8 for BC
Subtract 8 from both sides
4 = AB
Simplify

8. Segment Bisector
Any ray, segment, or line that intersects a segment at its midpoint. It divides the segment into two equal parts at its midpoint.