Answer:
[tex]\boxed{d=\sqrt{(a-c)^2+(b-d)^2}}[/tex]
Step-by-step explanation:
The formula of a distance between two points:
[tex]d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]
We have the points (a, b) and (c, d). Substitute:
[tex]d=\sqrt{(c-a)^2+(d-b)^2}=\sqrt{(a-c)^2+(b-d)^2}[/tex]
