21. The cantitruncation operation create new truncated tetrahedral cells at the vertices, and triangular prisms at the edges. 22. As a result, the triangular prisms expand into hexagonal prisms, and the truncated tetrahedra expand into truncated octahedra. 23. The dual graph of the Goldner Harary graph is represented geometrically by the truncation of the triangular prism . 24. Their non-axial square faces, which correspond with the edges of a cube, are connected to the triangular prisms . 25. There is a scissor construction ( I believe ) that reduces an individual chamber to a triangular prism . 26. This cross-section divides the runcinated 5-cell into two tetrahedral hypercupolae consisting of 5 tetrahedra and 10 triangular prisms each. 27. More than thirty forms of fruit-producing trees where in the garden : spiral, triangular prism , fan, cords, and candelabras. 28. A radial nonsimplectic subgroup is ?!, which can be doubled into a triangular prism domain as ?!. 29. It can be seen as parallel planes of square tiling with alternating offsets caused by layers of paired triangular prisms . 30. As the name suggests, it can be constructed by elongating a tetrahedron by attaching a triangular prism to its base.
