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  2. Tetrahedron - Wikipedia

    en.wikipedia.org/wiki/Tetrahedron

    4-sided dice. The Royal Game of Ur, dating from 2600 BC, was played with a set of tetrahedral dice. Especially in roleplaying, this solid is known as a 4-sided die, one of the more common polyhedral dice, with the number rolled appearing around the bottom or on the top vertex.

  3. Pyramid (geometry) - Wikipedia

    en.wikipedia.org/wiki/Pyramid_(geometry)

    This pyramid may be classified based on the regularity of its bases. A pyramid with a regular polygon as the base is called a regular pyramid. [13] For the pyramid with an n-sided regular base, it has n + 1 vertices, n + 1 faces, and 2n edges. [14]

  4. Four-Sided Pyramid - Wikipedia

    en.wikipedia.org/wiki/Four-Sided_Pyramid

    The artist created a plan and Four-Sided Pyramid was constructed by others, in 1999. [5] See also. List of public art in Washington, D.C., Ward 2; References

  5. Square pyramid - Wikipedia

    en.wikipedia.org/wiki/Square_pyramid

    A square pyramid has five vertices, eight edges, and five faces. One face, called the base of the pyramid, is a square; the four other faces are triangles. [2] Four of the edges make up the square by connecting its four vertices. The other four edges are known as the lateral edges of the pyramid; they meet at the fifth vertex, called the apex. [3]

  6. Pyramid - Wikipedia

    en.wikipedia.org/wiki/Pyramid

    An unusual pyramid with a circular plan survives at the site of Cuicuilco, now inside Mexico City and mostly covered with lava from an eruption of the Xitle Volcano in the 1st century BC. Several circular stepped pyramids called Guachimontones survive in Teuchitlán, Jalisco. Pyramids in Mexico were often used for human sacrifice.

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  8. Pyramid of Djoser - Wikipedia

    en.wikipedia.org/wiki/Pyramid_of_Djoser

    The pyramid of Djoser, [a] sometimes called the Step Pyramid of Djoser or Zoser, Step Pyramid of Horus Neterikhet is an archaeological site in the Saqqara necropolis, Egypt, northwest of the ruins of Memphis. [4] It is the first Egyptian pyramid to be built. The 6-tier, 4-sided structure is the earliest colossal stone building in Egypt. [5]

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