How do you find the midpoint of a line segment?

For endpoints (x₁, y₁) and (x₂, y₂), the midpoint is ((x₁ + x₂)/2, (y₁ + y₂)/2). In other words, find the average of the x-coordinates and the average of the y-coordinates. So the correct choice is C, “Find the average of the x-coordinates and the average of the y-coordinates.”

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