Octahedral cupola

An octahedral cupola is a type of geometric shape that can be classified as a part of the family of cupolae. It is formed by taking an octagonal base and placing it on top of a square prism (or frustum), which creates a structure resembling a dome on top of a flat base. In more detail, a cupola is a solid that consists of a polygonal base and triangular faces that connect the base to another polygonal face above.