The Historical Note in Section 7.5 asks the question, Why did the Egyptians build the pyramids using a slant height angle of about 44° or 52°? Write a paper answering this question.
Arthur F. Smith, “Angles of Elevation to the Pyramids of Egypt,” The Mathematics Teacher (February 1982, pp. 124-127).
Kurt Mendelssohn, The Riddle of the Pyramids, New York: Praeger Publications, 1974.