Midpoint of a line segment

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Learn it The midpoint of (x₁, y₁) and (x₂, y₂) is the average of the coordinates: ((x₁ + x₂)/2, (y₁ + y₂)/2). To find a missing endpoint, work backwards: x₂ = 2 × (midpoint x) − x₁.

Example: Midpoint of (−2, 5) and (6, −1).

x: (−2 + 6) ÷ 2 = 2.
y: (5 + (−1)) ÷ 2 = 2.
(2, 2).

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