A decagon is simply a ten-sided polygon.

Contents

### What is a 11 sided shape called?

A hendecagon is an 11-sided polygon, also variously known as an undecagon or unidecagon.

#### What is called a 12 sided shape?

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Geometry Plane Geometry Polygons

Download Wolfram Notebook A dodecagon is a 12-sided polygon, Several special types of dodecagons are illustrated above. In particular, a dodecagon with vertices equally spaced around a circle and with all sides the same length is a regular polygon known as a regular dodecagon,

#### What is the 20 sided shape called?

2nd century B.C.–4th century A.D. A number of polyhedral dice made in various materials have survived from the Hellenistic and Roman periods, usually from ancient Egypt when known. Several are in the Egyptian or Greek and Roman collections at the Museum.

- The icosahedron – 20-sided polyhedron – is frequent.
- Most often each face of the die is inscribed with a number in Greek and/or Latin up to the number of faces on the polyhedron.
- Nothing specific about the use of these polyhedra is preserved, so theories are built on clues provided by some variant examples.

One unusual example uses Greek words, a few of which resemble those associated with throws of the astragals (knucklebones), and this has led to suggestions they were used for games. Another remarkable example discovered in Dakhleh Oasis in Egypt in the 1980s records an Egyptian god’s name in Demotic (the Egyptian script of these late periods) on each face.

Divination – seeking advice about the unknown from the supernatural – seems to be the most likely purpose for the Dakhleh die: the polyhedron might have been thrown in order to determine a god who might assist the practitioner. Indeed, even the dice with simple letters might relate to divination: a Greek oracle book composed in in the 2nd or 3rd century A.D.

refers to throwing lots to obtain a number that would, through certain algorithms, lead to ready-prepared oracle questions and responses.

## What is a 13 sided shape called?

A 13-sided polygon, sometimes also called the triskaidecagon.

#### What is a 10000000000000000000000000000000000 sided shape called?

Megagon

Regular megagon | |
---|---|

Type | Regular polygon |

Edges and vertices | 1000000 |

Schläfli symbol | , t, tt, ttt, tttt, ttttt, tttttt |

Coxeter–Dynkin diagrams |

#### What is a 15 sided shape called?

An pentadecagon is a 15 sided polygon with interior angles that add to 2340 degrees.

## What is 14 sided shape called?

A tetradecahedron is a 14-sided polyhedron, sometimes called a tetrakaidecahedron.

#### What is a 16 sided shape called?

A 16-sided polygon, sometimes also called a hexakaidecagon. The regular hexadecagon is a constructible polygon, and the inradius, circumradius, and area of the regular hexadecagon of side length 1 are.

### What is a plane with 13 sides?

The grey “hat” polykite tile is an aperiodic monotile. | Photo Credit: arXiv.org What are the facts? A group of four scientists have discovered an entirely new shape which has 13 sides and has named it “the hat”. It is the first ‘einstein’ tile to have been found: a shape that can cover a plane without overlapping, leaving gaps, or repeating patterns,

#### What is a 19 sided shape?

A 19-sided polygon, sometimes also called the enneakaidecagon.

### What is the name of a 21 sided shape?

Is it a polygon? – The interiors of all polygons can be broken up into triangles, which is a handy way to find the sum of their interior angles. Take two less than the number of sides, n, and multiply times 180° : ( n – 2) x 180°, Is It a Polygon? Angles And Sides A circle is not a polygon, but a icosikaihenagon is a polygon. An icosikaihenagon is a 21-sided polygon. Most mathematicians and mathematics students would simply write “21-gon” to name it. Is A Circle A Polygon? No

### What is a 17 sided shape called?

The regular polygon of 17 sides is called the heptadecagon, or sometimes the heptakaidecagon. Gauss proved in 1796 (when he was 19 years old) that the heptadecagon is constructible with a compass and straightedge, Gauss’s proof appears in his monumental work Disquisitiones Arithmeticae., where the are distinct primes of the form

(1) |

known as Fermat primes, Constructions for the regular triangle ( ), square ( ), pentagon ( ), hexagon ( ), etc., had been given by Euclid, but constructions based on the Fermat primes =17″> were unknown to the ancients. The first explicit construction of a heptadecagon was given by Erchinger in about 1800. The trigonometric functions and are both algebraic numbers of degree 8 given respectively by The heptadecagon with unit edge lengths has inradius and circumradius given by both of which can be expressed in terms of finite root extractions. They can also be expressed as the largest roots of the algebraic equations

(6) | |

(7) |

The area of the regular heptadecagon is given by

(8) |

where can be expressed as the largest root of

(9) |

The following elegant construction for the heptadecagon (Yates 1949, Coxeter 1969, Stewart 1977, Wells 1991) was first given by Richmond (1893).1. Given an arbitrary point, draw a circle centered on and a diameter drawn through,2. Call the right end of the diameter dividing the circle into a semicircle,3. Construct the diameter perpendicular to the original diameter by finding the perpendicular bisector,4. Construct a quarter of the way up,5. Join and find so that is a quarter of,6. Find so that is,7. Construct the semicircle with diameter,8. This semicircle cuts at,9. Draw a semicircle with center and radius,10. This cuts the line segment at,11. Construct a line perpendicular to through,12. This line meets the original semicircle at,13. You now have points and of a heptadecagon.14. Use and to get the remaining 15 points of the heptadecagon around the original circle by constructing,,,,,,,,,,,,,,,, and,15. Connect the adjacent points for to 17, forming the heptadecagon. This construction, when suitably streamlined, has simplicity 53. The construction of Smith (1920) has a greater simplicity of 58. Another construction due to Tietze (1965) and reproduced in Hall (1970) has a simplicity of 50. and simplicity 45. The construction problem has now been automated to some extent (Bishop 1978).

#### What is a 18 sided shape?

An 18-sided polygon, sometimes also called an octakaidecagon.

#### What shape has 100 sides?

A 100-sided polygon is called a hectogon, centagon or 100-gon.

## What is a 30 sided shape called?

In geometry, a triacontagon or 30-gon is a thirty-sided polygon. The sum of any triacontagon’s interior angles is 5040 degrees.

### What is a 9999999999999 sided shape called?

What do you call a 9999-sided polygon? A nonanonacontanonactanonaliagon.

### What is a Googolgon?

Noun – googolgon ( plural googolgons )

( geometry ) A polygon with a googol number of sides (virtually indistinguishable from a circle)

Retrieved from ” https://en.wiktionary.org/w/index.php?title=googolgon&oldid=69254514 ” Categories :

- English terms suffixed with -gon
- English lemmas
- English nouns
- English countable nouns
- en:Geometry
- en:Polygons

## What is a 1 million sided shape called?

In geometry, a polygon with 1 million sides is called a. megagon.

#### What is the 25 sided shape?

Line

number of sides | name of polygon |
---|---|

25 | icosikaipentagon or pentacosagon |

26 | icosikaihexagon or hexacosagon |

27 | icosikaiheptagon or heptacosagon |

28 | icosikaioctagon or octacosagon |

#### What is a shape with 1000 sides called?

From Wikipedia, the free encyclopedia

Regular chiliagon | |
---|---|

A regular chiliagon | |

Type | Regular polygon |

Edges and vertices | 1000 |

Schläfli symbol | , t, tt, ttt |

Coxeter–Dynkin diagrams | |

Symmetry group | Dihedral (D 1000 ), order 2×1000 |

Internal angle ( degrees ) | 179.64° |

Properties | Convex, cyclic, equilateral, isogonal, isotoxal |

Dual polygon | Self |

A whole regular chiliagon is not visually discernible from a circle. The lower section is a portion of a regular chiliagon, 200 times as large as the smaller one, with the vertices highlighted. In geometry, a chiliagon () or 1000-gon is a polygon with 1,000 sides.

#### Which shape has 50 sides?

Hence,50 sided shape is called as Pentacontagon.

### What is a 11 and 12 sided shape called?

What is an 11 and 12 sided shape called? Answer Verified Hint: We are required to find the names for 11 and 12 sided shapes. Firstly, we draw a polygon of 11 sides and label the points. Then, draw the polygon of 12 sides and label the points to get the desired result.

- Complete step-by-step answer: A polygon, in mathematics, is a geometric figure that has a finite number of sides.
- The sides of any polygon are line segments connected at either end.
- The point of intersection of two or more points is called the vertex or the corner of the polygon.
- The word polygon is composed of two words ‘poly’ meaning many and ‘gon’ meaning sides.

Examples of polygons: 1. Triangle The triangle is a polygon because it has three sides and three angles.2. Square The square is a polygon because it has four sides and four angles.In geometry, the shape with 11 sided shape is called a hendecagon. It is also called as undecagon and endecagon.Hendecagon is a polygon that is made up of 11 sides and 11 angles. The sum of internal angles of a hendecagon is $ ^ }$The perimeter of the 11 sided shape is the product of 11 and side length.The hendecagon is diagrammatically represented as follows, From the above figure,We can conclude that the figure has 11 vertices namely, Vertices: A, B, C, D, E, F, G, H, I, J, K.We can conclude that the figure has 11 edges namely, Edges: AB,BC, CD, DE, EF, FG, GH, HI, IJ, JK, KAIn geometry, the shape with 12 sided shape is called a dodecagon. From the above figure,We can conclude that the figure has 11 vertices namely, Vertices: A, B, C, D, E, F, G, H, I, J, K, L.We can conclude that the figure has 11 edges namely, Edges: AB,BC, CD, DE, EF, FG, GH, HI, IJ, JK, KL, LA.$\therefore $ 11 sided and 12 sided polygons are called Hendecagon and Dodecagon respectively.

#### What shape has 14 sides?

A tetradecahedron is a 14-sided polyhedron, sometimes called a tetrakaidecahedron.

## What is a 100 sided shape called?

A 100-sided polygon is called a hectogon, centagon or 100-gon.