What the following lines are not used to creating linear perspective?

The lines that are not used to create linear perspective typically include horizontal and vertical lines that do not converge toward a vanishing point. Instead, these lines may represent elements that are parallel to the picture plane or depict height and width without depth. Additionally, curved lines or organic shapes do not contribute to the principles of linear perspective, which rely on straight lines converging to create the illusion of depth in a two-dimensional space.