IMPORTANT DEFINITIONS RELATED TO THE SHAPE

Shape It´s the external aparence of an objet or element in a image
Natural They are the ones related to nature. They havent been created by any human
Artificial Shapes whit have bee created by humans or machanic procedures.
Organic They are shapes that have irregularprofile silhoutte as well as their inner surface. Organic shapes are usually natural evn through they are sometimes artificial.
Geometric Shapes where parts follow a mathematic order, laws or partten.
Flat They have two dimensions such a paper sheet, a cinema screen or a canvas.
From They are volumetric shapes, they appear and are three dimensional.