### External Rectangles

- Root 2:
- 1.41
- Root 3:
- 1.73
- Root 4:
- 2
- Root 5:
- 2.24

### Internal Rectangles

- Root 2:
- 0.71
- Root 3:
- 0.58
- Root 4:
- 0.5
- Root 5:
- 0.45

### Golden Ratios

- A - Long:
- 0.62
- B - Short:
- 0.38
- C - Extended:
- 1.62

### Golden Ratio Multiplications

- 1:
- 1
- 2:
- 1.62
- 3:
- 2.62
- 4:
- 4.24
- 5:
- 6.85
- 6:
- 11.09
- 7:
- 17.94
- 8:
- 29.03

For more information, see Nathan Ford's article on A List Apart.