**1. Primary Solids**

The physical mass of an object is comparative to form. Form is three-dimensional and implies weight, such as a cube, cone, or sphere. Solid is one of the major states of matter. It is characterized by structural rigidity and resistance to changes of shape or volume.

**Cube**: A cube is a three-dimensional solid object bounded by six square faces, facets or sides, with three meeting at each vertex. The cube can also be called a regular hexahedron and is one of the five Platonic solids.

**Cone**: A cone is a three-dimensional geometric shape that tapers smoothly from a flat, usually circular base to a point called the apex or vertex. More precisely, it is the solid figure bounded by a plane base and the surface formed by the locus of all straight line segments joining the apex to the perimeter of the base.

**Sphere**: A sphere is a perfectly round geometrical object in three-dimensional space, such as the shape of a rounded ball. Like a circle in two dimensions, a perfect sphere is completely symmetrical around its center, with all points on the surface lying the same distance r from the center point.

**2. Dimensional Transformation**

A form can be transformed by altering one or more of its dimensions and still retain its family identity. A cube, for example, can be transformed into other prismatic forms by altering its height, width, or length. It can be compressed into a planar form, or stretched into a linear one.

**3. Subtractive Forms**

When regular forms have fragments missing from their volumes are removed them as if they were whole and complete. We refer to these mutilated forms as subtractive forms.

**4. Additive Forms**

**Centralizes Forms**: Centralized forms require the visual dominance of a geometrically regular, centrally located form, such as the sphere, cylinder, or polyhedron. Because of their centrality, these forms share the self-centering properties of the point and circle.

**5. Formal collision of geometry**

Formal collision of geometry requires two different elements, such as circles or rectangles. It is combined and makes different geometry forms which make interesting shape.