Curve stitching ([url]http://www.ams.org/samplings/curve-stitching[/url] and [url]http://britton.disted.camosun.bc.ca/string_art/jbstringart.html[/url]) show some connection of math and art. They also tie in a bit with the Pythagorean Theorem, as the proof given at [url]http://www.mathsisfun.com/geometry/pythagorean-theorem-proof.html[/url] can be drawn fairly easily using this worksheet.
