Geometric Construction

Drawing consists of construction of primitive geometric forms viz.  points, lines and planes that serve a the building blocks for more complicated geometric shapes and defining the position of object in space.

The use of lines for obtaining the drawing of planes is shown in figure 1.

Figure 1 illustrates various planes generally encountered

 

Solids are obtained by combination of planes. Plane surfaces of  simple solids are shown in figure 2.

 

Figure 2 surfaces of few simples solids .