La Rioja PAU Artistic Drawing II Practice Questions - La Rioja PAU Artistic Drawing II Examination - UR (Dibujo Artístico II 2o Bachillerato UR 2026) Exam

Cross-contour lines traverse across the interior surface of a form to map its 3D topography, while outer contour lines define only its boundary edges. Cross-contour lines outline the outer silhouette, whereas contour lines indicate cast shadows. Cross-contour lines are straight horizontal lines used only in perspective grids. Contour lines traverse interior volumes, whereas cross-contour lines represent background elements.