#coordinategeometry #distance_formula #exercise6a


D=√(x2−x1)2+(y2−y1)2
D = ( x 2 − x 1 ) 2 + ( y 2 − y 1 ) 2 .
d = distance
(x_1, y_1) = coordinates of the first point
(x_2, y_2) = coordinates of the second point