Besides, there's a twist at the top, which you've been informed about - and keep ignoring. This will affect the angle.
I can't understand why you don't accept that the pyramid has an overall uniform slope of 4:3, unless you are trying to make a name for yourself. But it won't work. Your argument is just too weak.
Although it is not true that all conservatives are stupid people, it is true that most stupid people are conservative. - John Stuart Mill