# Good Karma Domes - Dome Models

## Bringing the math to life through dome models

Starting with paper/cardboard models is a cheaper and quicker way of learning how frequency works and how the triangles fit together than building a full size dome and having troubles putting it together. After the paper models, we'll show you how to make a larger model out of lumber and PVC pipe hubs.

The basic structure we will work with is called the *"Icosahedron"*. It is a sphere that is made up of 20 equilateral triangles. Each vertice represents a point on an imaginary sphere. Three of these points will define one equilateral triangle face ( icosa face ) of structure ( icosahedron ). The icosa face or original equilateral triangle is a one frequency. These vertices ( corners or where triangles meet ) are pents. As frequency develops ( or as the icosa face is broken down ) the original corners of the one frequency will ALWAYS remain pents. The interior triangles develop by using frequency will always be hexes. The edges represent the chord. There is a proportional relationship between this chord length and the size of the sphere. This proportional relationship is defined by what dome builders refer to as *"The Chord Factor"* we will discuss this later in each model section.

### radius x chord factor = strut ( chord length )

There are three models to make.

- a regular Icosahedron otherwise known as a 1 frequency Icosasphere.
- a 2 frequency and is little more difficult but also is stronger and rounder.
- a 4 frequency, and our favorite here at Good Karma Domes.