Here are some delineations between art and math taken from http://mathematicalpoetry.blogspot.com

Delineation #1: Mathematical truths are discovered Artistic truths are mediated. . Delineation#2: Mathematicians generally agree on what is mathematically correct. Artists generally have no idea what is artistically correct. . Delineation#3 Math illuminates the supportive skeletal structure of thought whereas Art illuminates the metaphoric wind, which blows through that structure. . Delineation#4 Science reveals the body of GGod and Art reveals GGod's mind -- or is it the converse? . Delineation#5 Pure Mathematics has no expression for metaphor however; it does provide us a structure that can be used for it. . Delineation#6 In general, the mathematician is not interested in finding truths through nonsense as opposed to the artist who is.