Why did artists of the renaissance rely on mathematical formulas?

What statement about the influence the armory show had on artist is true? a) it unified the american artist in there desire to create representational art b) it influenced europen artist to imitate styles of art created by american artists c) it opened the eyes of american artist bold new ways of making art from europe d) after the show europen artist started to experiment

Examine the piece above. what is the subject matter in this piece? what is the content?

What is a principle of design that repeats elements to create good visual flow?