I think the pyramids are much older than most " experts " think !
I went to Egypt last summer and seen the pyramids in person the base looked like quadrilateral, or any polygon shape.
Nice, I'm envious, I would like to climb to the tops of all 3 pyramids !
I wish we would have did that to lol the pyramids was beautiful we visited the earliest one in Saqqara. 
Cool, some say the blocks of stone used to build them were poured ??
Dimension stone
Dimension stone is natural stone or rock that has been selected and finished (e.g., trimmed, cut, drilled, ground, or other) to specific sizes or shapes. Color, texture and pattern, and surface finish of the stone are also normal requirements. Another important selection criterion is durability: the time measure of the ability of dimension stone to endure and to maintain its essential and distinctive characteristics of strength, resistance to decay, and appearance.
Quarries that produce dimension stone or crushed stone (used
and they looked… Michael Monroe (Hanoi frontman) was one of the best… I would have shagged him. [Laughs] I like Michael, I think he's sexy, and I'm not gay. And I think Andy McCoy (Hanoi guitarist) does the best kind of Keith Richards... so much better than Mötley Crüe or Poison or any of those bands. They (Hanoi Rocks) were real — the rest of the guys, it was all a bit fake for me.""
Michael Monroe