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  2. Tetrahedron - Wikipedia

    en.wikipedia.org/wiki/Tetrahedron

    The volume of a tetrahedron can be obtained in many ways. It can be given by using the formula of the pyramid's volume: =. where is the base' area and is the height from the base to the apex. This applies for each of the four choices of the base, so the distances from the apices to the opposite faces are inversely proportional to the areas of ...

  3. Pyramid (geometry) - Wikipedia

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

    For the pyramid with an n-sided regular base, it has n + 1 vertices, n + 1 faces, ... The volume of a pyramid is the one-third product of the base's area and the height.

  4. Platonic solid - Wikipedia

    en.wikipedia.org/wiki/Platonic_solid

    The volume is computed as F times the volume of the pyramid whose base is a regular p-gon and whose height is the inradius r. That is, =. The following table lists the various radii of the Platonic solids together with their surface area and volume.

  5. 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

  6. 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]

  7. 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]

  8. 5-cell - Wikipedia

    en.wikipedia.org/wiki/5-cell

    In geometry, the 5-cell is the convex 4-polytope with Schläfli symbol {3,3,3}. It is a 5-vertex four-dimensional object bounded by five tetrahedral cells. It is also known as a C 5, hypertetrahedron, pentachoron, [1] pentatope, pentahedroid, [2] tetrahedral pyramid, or 4-simplex (Coxeter's polytope), [3] the simplest possible convex 4-polytope, and is analogous to the tetrahedron in three ...

  9. Hyperpyramid - Wikipedia

    en.wikipedia.org/wiki/Hyperpyramid

    2-dimensional hyperpyramid with a line segment as base 4-dimensional hyperpyramid with a cube as base. In geometry, a hyperpyramid is a generalisation of the normal pyramid to n dimensions. In the case of the pyramid one connects all vertices of the base (a polygon in a plane) to a point outside the plane, which is the peak. The pyramid's ...