Egyptian Pyramids

 Please answer these questions in paragraph form using my included article, and outside sources. Please paraphrase instead of quotation marks. Please make it about 700 words long. 

 a) What kind of questions should be answered in any theory of pyramid construction?  

b) What major problems arise in ramp theories?  

c) What are the current mostly accepted theories of pyramid construction? 

d) How does each theory address the main question(s) in pyramid construction?  Jean Pierre Houdin