How do you determine if the line segments are congruent

You must calculate the length of the segments.Suppose segments AB and CD Being A (m, n), B (p, q)  C(r,s) and D(t,u)They are congruent if:[tex]\boxed{(p-m)^2+(q-n)^2=(t-r)^2+(u-s)^2}[/tex]

You can know if they are congruent by the length of both lines!