About: Birotunda

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In geometry, a birotunda is any member of a family of dihedral-symmetric polyhedra, formed from two rotunda adjoined through the largest face. They are similar to a bicupola but instead of alternating squares and triangles, it alternates pentagons and triangles around an axis. There are two forms, ortho- and gyro-: an orthobirotunda has one of the two rotundas is placed as the mirror reflection of the other, while in a gyrobirotunda one rotunda is twisted relative to the other. The pentagonal birotundas can be formed with regular faces, one a Johnson solid, the other a semiregular polyhedron:

Attributes	Values
rdf:type	yago:Matter100020827 yago:PhysicalEntity100001930 yago:WikicatJohnsonSolids yago:Solid115046900
rdfs:label	Birotunda (en) 붙인 둥근지붕 (ko)
rdfs:comment	기하학에서 붙인 둥근지붕은 족의 다면체이고, 둥근지붕의 가장 큰 면을 연결한 것이다. 이것은 붙인 지붕과 유사하지만 삼각형과 사각형이 번갈아 나타나는 대신에 축 주변에 오각형과 삼각형이 번갈아 나타난다. 맞붙인 형태와 비틀어 붙인 형태의 두 종류의 형태가 있다: 맞붙인 둥근지붕은 두 둥근지붕 중 하나가 다른것의 거울상으로 놓여있는 것이고, 비틀어 붙인 둥근지붕에서는 한 둥근지붕은 다른 것에 대하여 꼬여있다. 붙인 오각둥근지붕은 정다각형 면으로 만들어질 수 있다; 하나는 존슨의 다면체이고, 다른 것은 반정다면체이다: * 맞붙인 오각둥근지붕, * 비틀어 붙인 오각둥근지붕, 십이이십면체라고도 불린다. 다른 형태는 일그러진 등변오각형과 으로 만들어질 수 있다. (ko) In geometry, a birotunda is any member of a family of dihedral-symmetric polyhedra, formed from two rotunda adjoined through the largest face. They are similar to a bicupola but instead of alternating squares and triangles, it alternates pentagons and triangles around an axis. There are two forms, ortho- and gyro-: an orthobirotunda has one of the two rotundas is placed as the mirror reflection of the other, while in a gyrobirotunda one rotunda is twisted relative to the other. The pentagonal birotundas can be formed with regular faces, one a Johnson solid, the other a semiregular polyhedron: (en)
foaf:depiction
dcterms:subject	Johnson solids
Wikipage page ID	11350819 (xsd:integer)
Wikipage revision ID	1092183232 (xsd:integer)
Link from a Wikipage to another Wikipage	Rotunda (geometry) Johnson solid Pentagonal orthobirotunda Elongated pentagonal gyrobirotunda Elongated pentagonal orthobirotunda Geometry Convex polytope Pentagon Semiregular polyhedron Norman Johnson (mathematician) Dihedral symmetry in three dimensions Gyroelongated pentagonal birotunda Triangle Dihedral group Dihedral symmetry Johnson solids Polyhedra Icosidodecahedron Point groups in three dimensions List of spherical symmetry groups Bicupola Mirror reflection
sameAs	Birotunda Birotunda Birotunda Birotunda Birotunda Birotunda
dbp:wikiPageUsesTemplate	dbt:Cite_book dbt:Math dbt:Mvar dbt:Short_description dbt:Sub dbt:Sup dbt:Polyhedron_navigator
thumbnail	wiki-commons:Special:FilePath/Pentagonal_orthobirotunda.png?width=300
has abstract	In geometry, a birotunda is any member of a family of dihedral-symmetric polyhedra, formed from two rotunda adjoined through the largest face. They are similar to a bicupola but instead of alternating squares and triangles, it alternates pentagons and triangles around an axis. There are two forms, ortho- and gyro-: an orthobirotunda has one of the two rotundas is placed as the mirror reflection of the other, while in a gyrobirotunda one rotunda is twisted relative to the other. The pentagonal birotundas can be formed with regular faces, one a Johnson solid, the other a semiregular polyhedron: * pentagonal orthobirotunda, * pentagonal gyrobirotunda, which is also called an icosidodecahedron. Other forms can be generated with dihedral symmetry and distorted equilateral pentagons. (en) 기하학에서 붙인 둥근지붕은 족의 다면체이고, 둥근지붕의 가장 큰 면을 연결한 것이다. 이것은 붙인 지붕과 유사하지만 삼각형과 사각형이 번갈아 나타나는 대신에 축 주변에 오각형과 삼각형이 번갈아 나타난다. 맞붙인 형태와 비틀어 붙인 형태의 두 종류의 형태가 있다: 맞붙인 둥근지붕은 두 둥근지붕 중 하나가 다른것의 거울상으로 놓여있는 것이고, 비틀어 붙인 둥근지붕에서는 한 둥근지붕은 다른 것에 대하여 꼬여있다. 붙인 오각둥근지붕은 정다각형 면으로 만들어질 수 있다; 하나는 존슨의 다면체이고, 다른 것은 반정다면체이다: * 맞붙인 오각둥근지붕, * 비틀어 붙인 오각둥근지붕, 십이이십면체라고도 불린다. 다른 형태는 일그러진 등변오각형과 으로 만들어질 수 있다. (ko)
prov:wasDerivedFrom	wikipedia-en:Birotunda?oldid=1092183232&ns=0
page length (characters) of wiki page	2763 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Birotunda
is Link from a Wikipage to another Wikipage of	Rotunda (geometry) Pentagonal orthobirotunda Gyroelongated pentagonal birotunda Orthobirotunda Gyrobirotunda
is Wikipage redirect of	Orthobirotunda Gyrobirotunda
is type of	Pentagonal orthobirotunda
is foaf:primaryTopic of	wikipedia-en:Birotunda

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