How do you find an endpoint if you're given one endpoint and the distance?

To find the other endpoint when given one endpoint and the distance, you can use the midpoint formula. If you have an endpoint ( A(x_1, y_1) ) and the distance ( d ), you can determine the coordinates of the other endpoint ( B(x_2, y_2) ) using the distance formula: ( d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2} ). By rearranging this equation, you can find possible coordinates for ( B ) that satisfy the distance condition relative to point ( A ). Depending on the problem, you may have multiple solutions for ( B ).