All shapes can be classified into tow types, name and define them.
Geometric and free form shapes.
Geometric shapes are precise shapes that can be described using mathematical formulas.
Free form shapes irregular and uneven.<span />
Abstract art, which is a form of art that uses different shapes, forms, colors, and lines that create an image which may exist with a degree of independence from visual references in the world.
Answer:
red, yellow, black, brown, and violet. No brushes have been found, so in all probability the broad black outlines were applied using mats of moss or hair, or even with chunks of raw color.
I believe that is Erich Korngold.
Hope this helped