## Where to Use

Designs should seek to incorporate aesthetically pleasing proportions into a design.

## Abstraction

Consider using the Golden Ratio and the closely related Fibonacci numbers.

### Golden Ratio

The Golden Ratio is illustrated in the following:

*Source*: Wikipedia

The Golden Ratio is an iterative construction which leads to the following ratios being equal:

This leads to another interesting definition for the Golden Ratio:

The Golden Ratio may also be constructed as follows:

### Fibonacci Numbers

The Fibonacci numbers are a sequence created by adding previous numbers to get the next one: 0,1,1,2,3,5,8,13,21… The ratio of a Fibonacci number to the previous one in the series (for example, 13/8) approaches the Golden Ratio as the sequence number increases.

**Therefore**, consider using dimensions related to Fibonacci numbers (usually through some scaling factor) to create designs that incorporate Golden Ratios and are conveniently related (for example: D:W:H = 5:8:13).

Here is an example using blocks that follow the Fibonacci sequence arrange into the Fibonacci spiral:

## Related Forms

This pattern supports Rabatment.