Ahatmose Wrote:
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> This image above shows an angle of 54.2 deg
>
> [
en.wikipedia.org]
>
> [
www.dreamstime.com]
...
Rome: An Oxford Archaeological Guide, Amanda Claridge (pg. 397) says the pyramid was:
Quote
... constructed of concrete faced with blocks of white Italian (luna) marble and measures 100 RF (30 m) square at the base, 125 RF (36.4m) high. Pyramids of similar size and proportions had been built for private individuals in Upper Egypt during the New Kingdom, but in Cestius’ day were especially characteristic of Nubia (Sudan), suggesting that possibly Cestius had served in the province (annexed in 24 BC). Though unusual, his choice was not unique; another of its kind, which stood between the Vatican and the Mausoleum of Hadrian, was demolished in the C15–C16.
So thanks, Don: but 54.2 deg is not all that different to the GP. And the Pyramid of Cestius is famous for having much sharper angles than the GP.
It's the actual
slope of the pyramid itself we're interested in, not the angle of an image. So far, we've got 68 deg (I think ultimately from Die Pyramide, Geschichte, Entdeckung, Faszination. 1. Aufl. Tietze, Christian: Verlag: Potsdam, Arcus Verlag, 1999, which I can't find anywhere.)
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