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  2. Hendecagon - Wikipedia

    en.wikipedia.org/wiki/Hendecagon

    In geometry, a hendecagon (also undecagon [1] [2] or endecagon [3]) or 11-gon is an eleven-sided polygon. (The name hendecagon , from Greek hendeka "eleven" and –gon "corner", is often preferred to the hybrid undecagon , whose first part is formed from Latin undecim "eleven".

  3. Tridecahedron - Wikipedia

    en.wikipedia.org/wiki/Tridecahedron

    A hendecagonal prism is a prism with a hendecagon base. It is a type of tridecahedron, which consists of 13 faces, 22 vertices, and 33 sides. A regular hendecagonal prism is a hendecagonal prism whose faces are regular hendecagons, and each of its vertices is a common vertex of 2 squares and 1 hendecagon.

  4. Hendecagram - Wikipedia

    en.wikipedia.org/wiki/Hendecagram

    The star in this scroll is not one of the regular forms of the hendecagram, but instead uses lines that connect the vertices of a hendecagon to nearly-opposite midpoints of the hendecagon's edges. [ 8 ] 11-pointed star Girih patterns are also used on the exterior of the Momine Khatun Mausoleum ; Eric Broug writes that its pattern "can be ...

  5. Hendecagrammic prism - Wikipedia

    en.wikipedia.org/wiki/Hendecagrammic_prism

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  6. Hendecahedron - Wikipedia

    en.wikipedia.org/wiki/Hendecahedron

    The bisymmetric hendecahedron contains 11 faces and can be arranged in 3D without gaps. A hendecahedron (or undecahedron) is a polyhedron with 11 faces.There are many topologically distinct forms of a hendecahedron, for example the decagonal pyramid, and enneagonal prism.

  7. Polygon - Wikipedia

    en.wikipedia.org/wiki/Polygon

    hendecagon (or undecagon) 11 [21] The simplest polygon such that the regular form cannot be constructed with compass, straightedge, and angle trisector. However, it can be constructed with neusis. [22] dodecagon (or duodecagon) 12 [21] tridecagon (or triskaidecagon) 13 [21] tetradecagon (or tetrakaidecagon) 14 [21] pentadecagon (or ...

  8. Monogon - Wikipedia

    en.wikipedia.org/wiki/Monogon

    In spherical geometry, a monogon can be constructed as a vertex on a great circle ().This forms a dihedron, {1,2}, with two hemispherical monogonal faces which share one 360° edge and one vertex.

  9. Neusis construction - Wikipedia

    en.wikipedia.org/wiki/Neusis_construction

    Neusis for angle trisection. Let l be the horizontal line in the adjacent diagram. Angle a (left of point B) is the subject of trisection.First, a point A is drawn at an angle's ray, one unit apart from B.