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A regular skew decagon is vertex-transitive with equal edge lengths. In 3-dimensions it will be a zig-zag skew decagon and can be seen in the vertices and side edges of a pentagonal antiprism, pentagrammic antiprism, and pentagrammic crossed-antiprism with the same D 5d, [2 +,10] symmetry, order 20.
For mathematical objects in more dimensions, see list of mathematical shapes. For a broader scope, ... Decagon – 10 sides; Hendecagon – 11 sides;
Four numbering schemes for the uniform polyhedra are in common use, distinguished by letters: [C] Coxeter et al., 1954, showed the convex forms as figures 15 through 32; three prismatic forms, figures 33–35; and the nonconvex forms, figures 36–92.
A pentagon is a five-sided polygon. A regular pentagon has 5 equal edges and 5 equal angles. In geometry, a polygon is traditionally a plane figure that is bounded by a finite chain of straight line segments closing in a loop to form a closed chain.
In 3-dimensions it will be a zig-zag skew hexadecagon and can be seen in the vertices and side edges of an octagonal antiprism with the same D 8d, [2 +,16] symmetry, order 32. The octagrammic antiprism , s{2,16/3} and octagrammic crossed-antiprism , s{2,16/5} also have regular skew octagons.
In geometry, a star polygon is a type of non-convex polygon. Regular star polygons have been studied in depth; while star polygons in general appear not to have been formally defined, certain notable ones can arise through truncation operations on regular simple or star polygons.
SAN FRANCISCO (Reuters) - - Decagon, a startup that sells artificial intelligence-powered customer support solutions, said on Tuesday it had raised $35 million in Series A and seed funding. Accel ...
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