Polyhedral Structures

We had to practice making shapes with Bristol board with excellent craft. 

The Tetrahedron

• 4 faces (each face is an equilateral triangle)
• 4 vertices
• 6 edges
• the simplest of platonic solids and yet strongest man made structure.

The Hexahedron (The Cube) 

• 6 faces (each face is a square, all angles are right angles)
• 8 vertices
• 12 edges

The Octahedron

• 8 faces (each being and equilateral triangle)
• 6 vertices
• 12 edges

The Dodecahedron 

• 12 faces (each regular pentagons)
• 20 vertices
• 30 edges

The Icosahedron

• 20 faces (each an equilateral triangle)
• 12 vertices
• 30 edges