How to find endpoint when given midpoint and other endpoint

Sometimes you may be given one endpoint and the midpoint, and have to work out the other endpoint. To get from the first endpoint (1,3) to the midpoint (3,7), we move 2 in the x

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What is Endpoint Formula?, Examples

Assuming you have an endpoint A = (x₁, y₁) and midpoint M = (x, y): Double midpoints' coordinates: 2x, 2y. Subtract the x-coordinate of the known endpoint from the first

Endpoint Calculator

If you know one endpoint (x1,y1) and the midpoint (a,b), but you do not know the other endpoint (x2,y2), then by rewriting the midpoint formula: {a = x1+x2 2 ⇒ 2a = x1 + x2 ⇒