Thanks TN, some very helpful diagrams - especially the last. At first glance, it looks very close to the angle when using perimeter == 1.16 x height.
Edit: just seen the last line of your post, obviously not! :¬)
Edit 2: Here's the quote...
Edit: just seen the last line of your post, obviously not! :¬)
Edit 2: Here's the quote...
Quote:Questioner: What should that proportion be?
Ra: I am Ra. This proportion should be the 1.16 which you may observe.
Questioner: Do you mean that the sum of the four base sides should be 1.16 of the height of the pyramid?
Ra: I am Ra. This is correct.