Pentagrammic duoprism
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Pentagrammic duoprism  

Rank  4 
Type  Uniform 
Notation  
Bowers style acronym  Stardip 
Coxeter diagram  x5/2o x5/2o () 
Elements  
Cells  10 pentagrammic prisms 
Faces  25 squares, 10 pentagrams 
Edges  50 
Vertices  25 
Vertex figure  Tetragonal disphenoid, edge lengths (√5–1)/2 (bases) and √2 (sides) 
Measures (edge length 1)  
Circumradius  
Inradius  
Hypervolume  
Dichoral angles  Stip–4–stip: 90° 
Stip–5/2stip: 36°  
Central density  4 
Number of external pieces  20 
Level of complexity  12 
Related polytopes  
Army  Pedip 
Regiment  Stardip 
Dual  Pentagrammic duotegum 
Conjugate  Pentagonal duoprism 
Abstract & topological properties  
Euler characteristic  0 
Orientable  Yes 
Properties  
Symmetry  H_{2}≀S_{2}, order 200 
Convex  No 
Nature  Tame 
The pentagrammic duoprism or stardip, also known as the pentagrammicpentagrammic duoprism, the 5/2 duoprism or the 5/25/2 duoprism, is a noble uniform duoprism that consists of 10 pentagrammic prisms, with 4 meeting at each vertex.
Gallery[edit  edit source]

GeoGebra render
Vertex coordinates[edit  edit source]
The coordinates of a pentagrammic duoprism of edge length 1, centered at the origin, are given by:
External links[edit  edit source]
 Bowers, Jonathan. "Category A: Duoprisms".
 Klitzing, Richard. "stardip".