Shapes are enclosed areas that are flat

Shape Shapes are flat, enclosed areas that are two-dimensional (length and height). Artists use both geometric and organic shapes. ... Artists use both actual texture (how things feel) and implied texture (how things look like they feel). Space Space is used to create the illusion of depth within an artwork.

The linear perspective changed the quality of art because it gave art a sense of reality. it gave the illusion that the background and surroundings were actually close and/or far and a sense of depth. linear perspective change the quality of art following its birth the renaissance period as they want the art to be more realistic and they believe one way to achieve it is to use the method of linear perspective. it uses the principle of math to realistically portray space and depth in art.