# 13

### The Prime Measure of this investigation is 0.3168 Roman miles and the second most important measure is 3168 Roman palms, so it is especially interesting that 0.3168 Roman miles = 316.8° of Silbury Hill’s base perimeter and 316.8° of the full cone design’s 316.8 megalithic yard perimeter 1/2 way level = 3168 Roman palms. Below is demonstrated some of the monuments harmonious interaction which use several methods and one method is numbers as in gematria and the common use of the Musical Scale Chart’s numbers and also the constant use of the same strategic numbers in different forms i.e. with a floating decimal point. Another method of interaction is geographic such as global positioning and the geometric interaction is awesome, geometry is a form of mathematics and other methods of mathematic interaction are used. There is a common modus operandi in the designs such as for example the way many different units of measure are used.

### A Pyramid and a cone are two examples of simple solid geometric shapes and there are only a few, by simple I mean they have simplest formulas and methods for calculating their volumes and surface areas other examples are a sphere, a cube, a prism and a cylinder. The Great Pyramid and Silbury Hill as left by the builders were both simple solid geometric shapes with their peaks missing, a true pyramid represents a series of squares decreasing in size from the base to the peak and a cone represents a series of ever decreasing circles from the base to the peak. The Pyramid is geometrically and mathematically linked to the cube or cuboid and the cone has the same relationship to a cylinder, the vertical sections of a cone and a pyramid are triangles, the slope angles of Silbury Hill and the Great Pyramid are both very special.

### Below demonstrates how the designs of Silbury Hill and the Avebury monument interact with each other and produce basic measurements relating to the full design Pyramid’s base perimeter and its height. The 1 mile or 63360” circumference circle shows the relationship of Silbury Hill’s slope angle to the full design Pyramid it is especially interesting because of the relationship of 63360” to the full design’s volume i.e. 63360” cubed x 0.0006336 = the volume.

### Note that the

distances between Stonehenge, Silbury Hill and the Avebury monument produce six

different measurements and each one is a profound design factor.