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In geometry of 4 dimensions, a 3-8 duoprism, a duoprism and 4-polytope resulting from the Cartesian product of a triangle and a octagon.
The 3-8 duoprism exists in some of the uniform 5-polytopes in the B5 family.
3-8 duopyramid
The dual of a 3-8 duoprism is called a 3-8 duopyramid. It has 24 tetragonal disphenoid cells, 48 isosceles triangular faces, 35 edges, and 11 vertices.
Orthogonal projection
References
3-8 duoprism Wikipedia(Text) CC BY-SA