In geometry , the gyroelongated pentagonal rotunda is one of the Johnson solids ( J 25 ). As the name suggests, it can be constructed by gyroelongating a pentagonal rotunda ( J 6 ) by attaching a decagonal antiprism to its base. It can also be seen as a gyroelongated pentagonal birotunda ( J 48 ) with one pentagonal rotunda removed.
3-416: J25 may refer to: Gyroelongated pentagonal rotunda , a Johnson solid (J 25 ) Honda J25 , an automobile engine Jennings J-25 , a pistol LNER Class J25 , a British steam locomotive class Malaysia Federal Route J25 [REDACTED] Topics referred to by the same term This disambiguation page lists articles associated with the same title formed as
6-512: A letter–number combination. If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=J25&oldid=1132740292 " Category : Letter–number combination disambiguation pages Hidden categories: Short description is different from Wikidata All article disambiguation pages All disambiguation pages Gyroelongated pentagonal rotunda A Johnson solid
9-503: Is one of 92 strictly convex polyhedra that is composed of regular polygon faces but are not uniform polyhedra (that is, they are not Platonic solids , Archimedean solids , prisms , or antiprisms ). They were named by Norman Johnson , who first listed these polyhedra in 1966. With edge length a, the surface area is and the volume is The dual of the gyroelongated pentagonal rotunda has 30 faces: 10 pentagons, 10 rhombi, and 10 quadrilaterals. This polyhedron -related article
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