A 3D shape with 13 faces is called a tridecahedron, and while there's no single "regular" one like a cube, you can create many variations, such as modifying a dodecahedron by adding a face, or using specific constructions like a space-filling tridecahedron with 6 trapezoids, 6 pentagons, and a hexagon.
A space-filling tridecahedron is a tridecahedron that can completely fill three-dimensional space without leaving gaps. It has 13 faces, 30 edges, and 19 vertices. Among the thirteen faces, there are six trapezoids, six pentagons and one regular hexagon. The polyhedron's dual polyhedron is an enneadecahedron.
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 a total of 62 faces: 20 regular triangular faces, 30 square faces, 12 regular pentagonal faces, with 60 vertices, and 120 edges.
A tridecagon, sometimes also called a triskaidecagon, is a 13-sided polygon.
A tetradecahedron is a polyhedron with 14 faces. There are numerous topologically distinct forms of a tetradecahedron, with many constructible entirely with regular polygon faces.
An icosahedron is a polyhedron that has 20 faces, or flat surfaces. A polyhedron is defined as a 3-D shape with flat surfaces. It has 12 vertices (corners) and 30 edges (lines where the faces meet), and the 20 faces of the icosahedron are equilateral triangles.
While the regular dodecahedron shares many features with other Platonic solids, one unique property of it is that one can start at a corner of the surface and draw an infinite number of straight lines across the figure that return to the original point without crossing over any other corner.
A polygon with 1 billion sides is called a gigagon.
A circle has 0 sides. A circle is not a polygon but a curved shape. This classification would be the basis of your teaching (not straight sides and corners).
A tridecagram is a 13-sided star polygon. There are 5 regular forms given by Schläfli symbols: {13/2}, {13/3}, {13/4}, {13/5}, and {13/6}. Since 13 is prime, none of the tridecagrams are compound figures.
The fifth element, i.e., the quintessence, according to Plato was identified with the dodecahedron. He says simply "God used this solid for the whole universe, embroidering figures on it".
U28 The truncated icosidodecahedron is also known as the great rhombicosidodecahedron, and if a set of all 13 Archimedean solids were constructed with all edge lengths equal, the truncated icosidodecahedron would be the largest. It has more vertices and edges than any other convex nonprismatic uniform polyhedron.
A 100-sided polygon is known as a ''hectogon'' or ''hecatontagon.
A dodecahedron is a polyhedron that has 12 faces, 20 vertices, and 30 edges. A face of a shape is a flat surface. The 12 faces of the dodecahedron are equal pentagons, or 2-dimensional shapes with 5 straight sides and 5 vertices.
(geometry) A polygon with a googol number of sides (virtually indistinguishable from a circle)
A chiliagon is a polygon (a shape made of straight edges) with 1000 sides. In a regular chiliagon, where all the sides are the same length and all the angles are the same size, the angle between two sides is roughly 179.64 , so two adjacent sides are very close to being a straight line.
Tetragon is a plane figure with four straight sides and angles.
The megagon is a polygon with a million sides. A regular megagon has equal sides and equal angles. The perimeter of a regular unit megagon can approximate pi to the 12th digit.
What do you call a 9999-sided polygon? A nonanonacontanonactanonaliagon. While polygons are important in computer graphics, what's special about a 9999-gon?
A digon as a face of a polyhedron is degenerate because it is a degenerate polygon, but sometimes it can have a useful topological existence in transforming polyhedra.
With this in mind, some archaeologist have dismissed the idea that dodecahedra were used as measuring devices. Rather, it has been suggested that they were used for religious or ritual purposes. One dodecahedron found in Germania contained remnants of wax- perhaps it was used to hold a candle in a religious ceremony.
The standard model of cosmology predicts that the universe is infinite and flat. However, cosmologists in France and the US are now suggesting that space could be finite and shaped like a dodecahedron instead.