If you mean the Egyptian pyramids, then the ancient Egyptian built them.
However other civilizations have also built pyramidal structures.
we dont know the purpose of why they built the great pyramaid
Because it just is!
Unknown; there where many different types of pyramids. This first pyramid was a bunch of boulders over the tomb
No
No dont think so!
The correct spelling is "pyramid"
5 five
5 faces
A triangular pyramid is a pyramid having a triangular base.
triangular pyramaid
Yes a pyramid is a 3 dimensional solid object
They're both shapes... and three dimensional shapes.