Why do we need to know about Roman theatre?

In an art piece if there are over lapping lines that cross each other and twist and turn and do all sorts of fun things, that can manipulate a mood. it can make someone happy if there's color and texture put in the art. it resembles happiness which can effect someone visually. if you draw or paint shapes that mean something to you, viewers can relate and be effected by the symbolism of the art.

The 1st one.

you're really pretty, btw.