Geometric Solids 

A geometric solid are the surfaces that surround a 3-dimensional shape. These shapes have length, width, and thickness.  Example: 

 A cube has 6 surfaces. We call these surface ‘faces’. A cube also has 8 edges (the place where the faces meet), and 8 vertices (the point where the edges meet). 

Geometric solids can have flat surfaces (faces) or curved surfaces. Examples of solids with curved surfaces are a sphere, a cylinder, and a cone. 

Here is a cylinder:

Polyhedrons – geometric solids whose surfaces are all formed by polygons. 

2 kinds of polyhedrons are: pyramids and prisms. 

A pyramid has a base and 3 or more faces that all meet at one vertex. 

 A prism has two bases connected by 3 or more polygons. 

 The bases of prisms are always parallel.  

A rectangular prism has 6 faces; 12 edges; and 8 vertices.  

The volume of a rectangular prism is equal to the area of the base times the height.  

V = (A * B) * C