A Review of Geometric Shape of Components of Body from the View of Democritus and His Followers

Two views have been proposed about the simplexity and complexity of body in philosophy which is responsible for knowing realities. One is simplexity-based which holds that body is simply froma corporalis (corporeal form) and denies that it is composed of matter and form as well as small components. The other is complexity-based whose proponents are divided into two groups. One group regards body composed of matter and form (i.e. corporeal form) and the other holds that body is composed of small components. The latter has specified a shape for each constituting components of elements and celestial spheres, two of which are discussed in the present paper. It should be noted that there are four simple elements and celestial spheres have a shared shape in the view of the latter. Thus there are totally five shapes for the components of elements and celestial spheres. The paper takes into consideration two shapes (the shapes of components of fire and components of the earth). It takes into consideration and explains how these two shapes, which correspond to sixteenth and seventeenth shapes in Elucid's writing, are formed and presents arguments for its accuracy, having mentioned the hypotheses.