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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. Figurate number - Wikipedia

    en.wikipedia.org/wiki/Figurate_number

    The term figurate number is used by different writers for members of different sets of numbers, generalizing from triangular numbers to different shapes (polygonal numbers) and different dimensions (polyhedral numbers).

  4. List of polygons - Wikipedia

    en.wikipedia.org/wiki/List_of_polygons

    A pentagon is a five-sided polygon. A regular pentagon has 5 equal edges and 5 equal angles. In geometry, a polygon is traditionally a plane figure that is bounded by a finite chain of straight line segments closing in a loop to form a closed chain.

  5. 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 ...

  6. Son Holds Triple Murder Suspect at Gunpoint Until Police ...

    www.aol.com/son-holds-triple-murder-suspect...

    The son of a couple killed in a suspected triple murder held the alleged shooter at gunpoint until police arrived, according to reports On Monday, Jan. 13, David Lever, 55, of Greenville, North ...

  7. Man 'Downgrades' Sister-in-Law's Christmas Gift After Seeing ...

    www.aol.com/man-downgrades-sister-laws-christmas...

    A man says he opted to "downgrade" his sister-in-law's Christmas gift after realizing that what she bought him was not on the same level. In a post shared to Reddit that has since been deleted ...

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