a two-dimensional object that has no endpoints and continues on forever in a plane; formed of infinite points; the 3 orientations that lines may have are horizontal, vertical, ...
A mark that defines a shape, a contour, and, more generally, marks that make up the design of a picture. Lines are key to establishing structure and movement in a picture.
1) Dark line in a spectrum, produced when light or other electromagnetic radiation coming from a distant source passes through a gas cloud or similar object closer to the ...