How is it that both egyptian and mayan pyramids (and temple) complexes have identicle geometry/ground plan(?)?
Actually, any resemblance is purely superficial. Both Mayan and Egyptian buildings have an outer pyramid shape, but that’s about all. Here are the key differences: A Mayan pyramid is used for worship, as a temple; an Egyptian one is a tomb. A Mayan pyramid has steps, so it can be climbed; an Egyptian one (except the early pyramids, the step-pyramids of Saqqara) has smooth faces–it cannot be climbed. An Egyptian one has rooms/chambers underneath; a Mayan one does not. A Mayan pyramid has a very simple floor plan, outlining the square base; an Egyptian floor plan is very complex, because it includes inner chambers.