what is the difference between the types of line that artists use when they make contour line drawing and sketches?

Answer

:First is the standard contour drawing. Contour Drawing: A contour is the line which defines a form or edge – an outline. ... Blind Contour: Blind contour is similar to a regular contour drawing except the artist keeps their eyes on the subject they are drawing and does not look down at the paper.

Explanation:

Cross-contour lines are a way to add depth to your contour drawings without adding shading. To add them, you'll draw parallel lines that run across the object, similar to those you might see on a topographic map.

i hope this helps :)

for many centuries, the catholic church has been a patron of the arts. the church has used various scientific methods to maintain its power.

not 100% sure though!

they are often in theme and variations