How is line used to make shape?

Lines join to form boundaries

The governing concept is the relationship between line and shape in visual art. A shape is a two-dimensional area that can be identified because its boundary separates it from the surrounding space. Lines can join, meet, or enclose an area to create that boundary; the enclosed boundary makes the shape recognizable. Therefore, option A is correct. Lines do not literally create sound or smell, and they cannot stop time; those choices are unrelated to the visual function being tested. A single open line may suggest an edge, but connected lines that enclose a region provide the clearest basis for a shape. Thus line is an essential tool for outlining and constructing two-dimensional forms.

This is a Class 9 Art Education question. Chapter: Elements of Art. Topic: Line.