They leap from this likeness to the conclusion that the Great Pyramid was built with the sole intention of celebrating pi. They overlook that the ancient Egyptians built about 70 pyramids over a 300 year period. None of the others which remain measurable celebrate pi but collectively they reveal why the Great Pyramid apparently does. The relationship between pi and the dimensions of the Great Pyramid is an artifact of the construction process. As a physicist, engineer and occasional lecturer on pyramid myths I knew there was no historical evidence that the pyramid builders even knew the value of pi.
Egyptian value dates from a thousand years later.
The slope of the Great Pyramid, which determines its base to height ratio, is about 52 degrees. Obviously the slope was measured during construction to ensure that it remained constant. This makes the ratio of twice the base to the height exactly three and a seventh, not too bad an approximation to pi. However, on examining the slopes of other pyramids I found the majority of them conformed to the same algorithm. The vertical measurement was one cubit and the horizontal measurement was an integer number of fingers.