1. The user asks how to find the midpoint ("milieu") of a segment. 2. The midpoint formula for a segment with endpoints $A(x_1,y_1)$ and $B(x_2,y_2)$ is: $$ M = \left( \frac{x_1 + x_2}{2}, \frac{y_1 + y_2}{2} \right) $$ 3. This formula means you add the x-coordinates of the two points and divide by 2 to get the x-coordinate of the midpoint. 4. Similarly, add the y-coordinates of the two points and divide by 2 to get the y-coordinate of the midpoint. 5. This gives the exact center point between $A$ and $B$ on the coordinate plane. 6. If you provide the coordinates of the endpoints, I can calculate the midpoint for you.