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The image provided asks to find the coordinates of the midpoint of segment AB using the number line.

### To solve this:
- The coordinates of point **A** are at -12.
- The coordinates of point **B** are at 8.

The formula for finding the midpoint \( M \) of a segment with endpoints \( A(x_1) \) and \( B(x_2) \) is:
\[
M = \frac{x_1 + x_2}{2}
\]

Substituting the values of \( A(-12) \) and \( B(8) \):
\[
M = \frac{-12 + 8}{2} = \frac{-4}{2} = -2
\]

Thus, the coordinate of the midpoint of segment AB is **-2**.

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### Related Questions:
1. How do you find the midpoint of a segment in a coordinate plane?
2. Can you use the midpoint formula in 3D geometry, and how would it change?
3. How can midpoints be applied in dividing line segments into specific ratios?
4. What is the geometric significance of midpoints in polygons?
5. Can you derive the midpoint formula from basic distance properties?

**Tip:** Always double-check the signs of your coordinates when calculating midpoints to avoid errors.

Use the number line to find the coordinates of the midpoint of each segment AB.

Learn how to find the midpoint of segment AB using a number line. This problem involves geometry concepts and uses the midpoint formula to calculate the midpoint between points A(-12) and B(8). Suitable for students in Grades 6-8.

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