Which drawing technique focuses on illuminating form through lines?

The technique that focuses on illuminating form through lines is contour drawing. This method emphasizes the outline and surface details of subjects, enabling artists to convey the three-dimensionality of objects using only lines. By following the contours and edges of a subject without looking at the paper, artists can create a sense of form and volume that enhances the viewer's perception of depth and shape.

Contour drawing also encourages a keen observation of the subject, allowing artists to explore the relationships between shapes and spaces. This emphasis on lines distinguishes it from other drawing techniques which may rely more on shading or broader illustrative methods. Through contour drawing, the artist captures the essence and contour of the object, resulting in a clearer representation of form in a way that emphasizes linear qualities.