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  2. Pyramidal number - Wikipedia

    en.wikipedia.org/wiki/Pyramidal_number

    Geometric representation of the square pyramidal number 1 + 4 + 9 + 16 = 30. A pyramidal number is the number of points in a pyramid with a polygonal base and triangular sides. [1] The term often refers to square pyramidal numbers, which have a square base with four sides, but it can also refer to a pyramid with any number of sides. [2]

  3. Egyptian pyramids - Wikipedia

    en.wikipedia.org/wiki/Egyptian_pyramids

    The Giza Plateau is the location of the Pyramid of Khufu (also known as the "Great Pyramid" and the "Pyramid of Cheops"), the somewhat smaller Pyramid of Khafre (or Chephren), the relatively modest-sized Pyramid of Menkaure (or Mykerinus), along with a number of smaller satellite edifices known as "Queen's pyramids", and the Great Sphinx of ...

  4. Tetrahedral number - Wikipedia

    en.wikipedia.org/wiki/Tetrahedral_number

    A pyramid with side length 5 contains 35 spheres. Each layer represents one of the first five triangular numbers. A tetrahedral number, or triangular pyramidal number, is a figurate number that represents a pyramid with a triangular base and three sides, called a tetrahedron.

  5. Pyramid - Wikipedia

    en.wikipedia.org/wiki/Pyramid

    The Great Pyramid is the only extant one of the Seven Wonders of the Ancient World. Ancient Egyptian pyramids were, in most cases, placed west of the river Nile because the divine pharaoh's soul was meant to join with the sun during its descent before continuing with the sun in its eternal round. [9]

  6. Egyptian geometry - Wikipedia

    en.wikipedia.org/wiki/Egyptian_geometry

    We only have a limited number of problems from ancient Egypt that concern geometry. Geometric problems appear in both the Moscow Mathematical Papyrus (MMP) and in the Rhind Mathematical Papyrus (RMP). The examples demonstrate that the ancient Egyptians knew how to compute areas of several geometric shapes and the volumes of cylinders and pyramids.

  7. Pyramid of the Sun - Wikipedia

    en.wikipedia.org/wiki/Pyramid_of_the_Sun

    The Pyramid of the Sun is the largest building in Teotihuacan, and one of the largest in Mesoamerica.It is believed to have been constructed about 200 AD. [4] Found along the Avenue of the Dead, in between the Pyramid of the Moon and the Ciudadela, and in the shadow of the mountain Cerro Gordo, the pyramid is part of a large complex in the heart of the city.

  8. Construction of the Egyptian pyramids - Wikipedia

    en.wikipedia.org/wiki/Construction_of_the...

    Houdin published his theory in the books Khufu: The Secrets Behind the Building of the Great Pyramid in 2006 [52] and The Secret of the Great Pyramid, co-written in 2008 with Egyptologist Bob Brier. [53] In Houdin's method, each ramp inside the pyramid ended at an open space, a notch temporarily left open in the edge of the construction. [54]

  9. Seked - Wikipedia

    en.wikipedia.org/wiki/Seked

    Casing stone from the Great Pyramid. The seked of a pyramid is described by Richard Gillings in his book 'Mathematics in the Time of the Pharaohs' as follows: . The seked of a right pyramid is the inclination of any one of the four triangular faces to the horizontal plane of its base, and is measured as so many horizontal units per one vertical unit rise.