A polygrammic prism is a prism formed by two regular polygrams offset along their symmetry axis and with corresponding edges connected by lateral
faces. The hexagrammic prism 
and octagrammic prism 
are illustrated above.
Polygrammic Prism
See also
Hexagrammic Prism, Octagrammic Prism, Polygram, Prism Regular PolygonExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Polygrammic Prism." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/PolygrammicPrism.html