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Hendecagram information


Hendecagram
The four regular hendecagrams
Edges and vertices11
Schläfli symbol{11/2}, {11/3}
{11/4}, {11/5}
Coxeter–Dynkin diagrams,
,
Symmetry groupDih11, order 22
Internal angle (degrees)≈114.545° {11/2}
≈81.8182° {11/3}
≈49.0909° {11/4}
≈16.3636° {11/5}

In geometry, a hendecagram (also endecagram or endekagram) is a star polygon that has eleven vertices.

The name hendecagram combines a Greek numeral prefix, hendeca-, with the Greek suffix -gram. The hendeca- prefix derives from Greek ἕνδεκα (ἕν + δέκα, one + ten) meaning "eleven". The -gram suffix derives from γραμμῆς (grammēs) meaning a line.[1]

  1. ^ Liddell, Henry George; Scott, Robert (1940), A Greek-English Lexicon: γραμμή, Oxford: Clarendon Press

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Hendecagram

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In geometry, a hendecagram (also endecagram or endekagram) is a star polygon that has eleven vertices. The name hendecagram combines a Greek numeral prefix...

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notation) May 11 (day–month date notation) {11/5}, a type of regular hendecagram 1/15 may refer to: January 15 (month–day date notation) Moscovium, synthetic...

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Enneagram, a nine-pointed star polygon Decagram, a ten-pointed star polygon Hendecagram, an eleven-pointed star polygon Dodecagram, a twelve-pointed star polygon...

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{7/3} Octagram – {8/3} Enneagram – {9/2} and {9/4} Decagram – {10/3} Hendecagram – {11/2}, {11/3}, {11/4} and {11/5} Dodecagram – {12/5} m and n must...

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Hendecagon

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The hendecagon shares the same set of 11 vertices with four regular hendecagrams: 10-simplex - can be seen as a complete graph in a regular hendecagonal...

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Equiangular polygon

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Hendecagrammic prism

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identical regular hendecagrams connected by squares. The related hendecagrammic antiprisms are made from two identical regular hendecagrams connected by equilateral...

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