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A pentagon is a five-sided polygon. A regular pentagon has 5 equal edges and 5 equal angles. ... To construct the name of a polygon with more than 20 and fewer than ...
An icosagram is a 20-sided star polygon, represented by symbol {20/n}. There are three regular forms given by Schläfli symbols : {20/3} , {20/7} , and {20/9} . There are also five regular star figures (compounds) using the same vertex arrangement : 2{10} , 4{5} , 5{4} , 2{10/3} , 4{5/2} , and 10{2} .
There are generic geometric names for the most common polyhedra. The 5 Platonic solids are called a tetrahedron , hexahedron , octahedron , dodecahedron and icosahedron with 4, 6, 8, 12, and 20 sides respectively.
These lower symmetries allow geometric distortions from 20 equilateral triangular faces, instead having 8 equilateral triangles and 12 congruent isosceles triangles. These symmetries offer Coxeter diagrams : and respectively, each representing the lower symmetry to the regular icosahedron , (*532), [5,3] icosahedral symmetry of order 120.
A polytope is a geometric object with flat sides, which exists in any general number of dimensions. ... The following list of polygons, ... E 6 / E 7 / E 8 / F 4 / G ...
Megagon - 1,000,000 sides; Star polygon – there are multiple types of stars Pentagram - star polygon with 5 sides; Hexagram – star polygon with 6 sides Star of David (example) Heptagram – star polygon with 7 sides; Octagram – star polygon with 8 sides Star of Lakshmi (example) Enneagram - star polygon with 9 sides; Decagram - star ...
Polygon names and miscellaneous properties; Name Sides Properties monogon: 1: Not generally recognised as a polygon, [18] although some disciplines such as graph theory sometimes use the term. [19] digon: 2: Not generally recognised as a polygon in the Euclidean plane, although it can exist as a spherical polygon. [20] triangle (or trigon) 3
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 regular triangular faces, 30 square faces, 12 regular pentagonal faces, 60 vertices, and 120 edges.