A line can be perceived as a narrow plane or a long point. Another definition of a line is the trace of a point in motion. By this definition, a line is the precise record of where a pen tip has moved across paper.
plane can be perceived as a wide line or a large point. Another definition of a plane is the trace of a line in motion. By this definition, a plane is the precise record of where the long side of a stick of chalk has moved across a blackboard.
and complexity. The can become lines and curves. They can form complex shapes, patterns, textures, and any other structure imaginable. Dots in combination can even imply direction and movement, bringing us to lines.