# Cylhemoctahedrinder (EntityTopic, 11)

### From Hi.gher. Space

The **cylhemoctahedrinder** is the Cartesian product of a square pyramid and a circle. Its systematic name uses the square pyramid's less common name *hemoctahedron* as systematic naming breaks when trying to represent the Cartesian product of something with a multiple-word name like "square pyramid".

It is bounded by a cubinder, four cyltrianglinders and one curved 4-surface of some description. Its cells are eight cylinders and five curved cells formed by bending prisms of the faces of the square pyramid around in 4D. Its faces are five circles and eight curved-cylinder-surfaces. It has five edges and no vertices.

## Projection

The following is a projection of the cylhemoctahedrinder:

Notable Pentashapes
| |

Flat:
| pyroteron • aeroteron • geoteron |

Curved:
| tritorus • pentasphere • glone • cylspherinder • tesserinder |

48. 22^{1}Cylconinder | 49. 2[11]
^{1}Cylhemoctahedrinder | 50. 21^{2}Cyltetrahedrinder |

List of tapertopes |