page_title: Rotunda (geometry)
hierarchical_section_title: Rotunda (geometry)
caption_attribution_description: English: the square rotunda
context_page_description: In geometry, a rotunda is any member of a family of dihedral-symmetric polyhedra. They are similar to a cupola but instead of alternating squares and triangles, it alternates pentagons and triangles around an axis. The pentagonal rotunda is a Johnson solid.
  Other forms can be generated with dihedral symmetry and distorted equilateral pentagons.
context_section_description: In geometry, a rotunda is any member of a family of dihedral-symmetric polyhedra. They are similar to a cupola but instead of alternating squares and triangles, it alternates pentagons and triangles around an axis. The pentagonal rotunda is a Johnson solid.
  Other forms can be generated with dihedral symmetry and distorted equilateral pentagons.
caption: A square rotunda
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