# Question: What Is A 13 Sided Shape Called?

## What is a 10 sided shape?

decagonIn geometry, a decagon (from the Greek δέκα déka and γωνία gonía, “ten angles”) is a ten-sided polygon or 10-gon.

The total sum of the interior angles of a simple decagon is 1440°..

## What do u call a 11 sided shape?

hendecagonIn geometry, a hendecagon (also undecagon or endecagon) 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”.)

## What is a 25 sided shape called?

pentacosagonlinenumber of sidesname of polygon23icosikaitrigon or tricosagon24icosikaitetragon or tetracosagon25icosikaipentagon or pentacosagon26icosikaihexagon or hexacosagon38 more rows•Apr 6, 2006

## What is the weirdest shape in the world?

Here’s some unusual shapes with fantastic names you almost definitely didn’t learn in high school geometry.Torus. Image courtesy of Wikimedia Commons. … Reuleaux triangle. Image courtesy of Wikimedia Commons. … Hyperboloid. Image courtesy of Wikimedia Commons. … Apollonian Gasket. … Balbis. … Möbius Strip. … Vesica Piscis. … Lemniscate.More items…•

## What is a 14 sided shape called?

tetradecagonIn geometry, a tetradecagon or tetrakaidecagon or 14-gon is a fourteen-sided polygon.

## What is a 50 sided shape called?

pentacontagonIn geometry, a pentacontagon or pentecontagon or 50-gon is a fifty-sided polygon.

## What’s a 20 sided shape called?

icosagonIn geometry, an icosagon or 20-gon is a twenty-sided polygon. The sum of any icosagon’s interior angles is 3240 degrees.

## What is a 15 sided shape?

PentadecagonIn geometry, a pentadecagon or pentakaidecagon or 15-gon is a fifteen-sided polygon.

## What is a 80 sided shape called?

octacontagonIn geometry, an octacontagon (or ogdoëcontagon or 80-gon from Ancient Greek ὁγδοήκοντα, eighty) is an eighty-sided polygon. The sum of any octacontagon’s interior angles is 14040 degrees.

## What is a 360 sided shape called?

In geometry, a 360-gon (triacosiahexe(a)contagon) is a polygon with 360 sides. The sum of any 360-gon’s interior angles is 64440 degrees.

## Does a circle have 0 or infinite sides?

A circle will have zero sides. A side requires two distinct end points joined by a straight line. For a circle this will never be the case. It has infinite points, like any straight line but no two distinct points are such that their joining line coincides with the circle.

## What is a billion sided shape called?

apeirogonApeirogonThe regular apeirogonSchläfli symbol{∞}Coxeter diagramInternal angle (degrees)180°Dual polygonSelf-dual2 more rows

## What is a 21 sided polygon called?

IcosikaihenagonA polygon with 21 sides is therefore called a: Icosikaihenagon, but also a Icosihenagon.

## What is the biggest shape?

In geometry, the rhombicosidodecahedron, is an Archimedean solid, one of thirteen convex isogonal nonprismatic solids constructed of two or more types of regular polygon faces.It has 20 equilateral triangular faces, 30 square faces; a total of 50 faces, 12 regular pentagonal faces, 60 vertices, and 120 edges.More items…

## What is a 1 sided shape called?

henagon monogonList of n-gons by Greek numerical prefixesSidesNames1henagonmonogon2digonbigon3trigontriangle4tetragonquadrilateral7 more rows

## What is a 9999 sided shape called?

myriagonMyriagonRegular myriagonCoxeter diagramSymmetry groupDihedral (D10000), order 2×10000Internal angle (degrees)179.964°Dual polygonSelf5 more rows

## How many triangles are in a 20 Gon?

There are 20C3 = 1140 ways to choose three vertices that form a triangle. Of these, there are 20 triangles with two side lengths on the perimeter of the regular polygon. Also, for each side, there are 16 points that can make a triangle with exactly one side length on the 20-gon.

## What’s a 6 sided shape called?

hexagonA five-sided shape is called a pentagon. A six-sided shape is a hexagon, a seven-sided shape a heptagon, while an octagon has eight sides…

## What is a 1000000 sided shape called?

megagonA megagon or 1 000 000-gon is a polygon with 1 million sides (mega-, from the Greek μέγας megas, meaning “great”).

## What is a 100 sided shape called?

hectogonIn geometry, a hectogon or hecatontagon or 100-gon is a hundred-sided polygon. The sum of all hectogon’s interior angles are 17640 degrees.

## What is a 12 sided shape called?

dodecagonIn geometry, a dodecagon or 12-gon is any twelve-sided polygon.

## What is a 1 trillion sided shape called?

chiliagonChiliagonRegular chiliagonTypeRegular polygonEdges and vertices1000Schläfli symbol{1000}, t{500}, tt{250}, ttt{125}Coxeter diagram5 more rows

## Is there a 9 sided shape?

In geometry, a nonagon (/ˈnɒnəɡɒn/) or enneagon (/ˈɛniəɡɒn/) is a nine-sided polygon or 9-gon. The name nonagon is a prefix hybrid formation, from Latin (nonus, “ninth” + gonon), used equivalently, attested already in the 16th century in French nonogone and in English from the 17th century.