Once youve done that just add the numbers that are under the radical sign and solve for d. The hypotenuse of the triangle will be the distance between the two points. To derive a general formula for the distance between two points Aleftx_1y_1right and Bleftx_2y_2right we use the theorem of Pythagoras.
Dont let the subscripts scare you.
The distance calculation code uses the 2D distance formula given above. The same operation is performed for. Your x1 input is subtracted from your x2 input then squared. D displaystyle sqrtx_1 - x_22 y_1 - y_22 Explanation.