The colors, edges and textures of the work give it shape against a background. Shapes are either derived from nature or the laws of geometry. Organic shapes reflect those found in nature. Organic shapes tend to be soft, curvilinear and irregular. They are difficult to measure and difficult to describe.
Geometric shapes are regular and precise, such as triangles, rectangles and circles.
They are easy to measure and easy to describe. Mass Are properties of three dimensional objects. Mass is a reflection of its weight. It is the bulk, density and weight of matter in space. The larger the mass, the harder it is for a body of an object to move.