# Glossary

The midpoint M of a line segment AB, which extends between points A and B, is the point that divides the segment into two equal parts.

If $$A\;\left(x_1,\;y_1\right)$$ and $$B\;(x_2,\;y_2)$$ are points on a Cartesian plane, then the midpoint M of the line segment AB has coordinates $$\left(\frac{x_1+\;x_2}2,\;\;\frac{y_1+\;y_2}2\right)$$