I am very responsible to tell you that if there are two straight lines overlapping on the plane, I am sorry. This is a paradox and does not exist. In a plane, two straight lines can only be parallel or intersect. When two lines overlap, they become a line, so they will not be parallel and will not intersect because there is no intersection.

I tell you responsibly that your math problem is wrong. You can complain or scold the person who has a problem. In the same plane, two straight lines cannot have two intersections. If this question appears in your final exam, senior high school entrance examination and college entrance examination, please write "sick" or "mental derangement" on the paper.