Pentagonal Bipyramid
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In geometry, the pentagonal bipyramid (or dipyramid) is third of the infinite set of face-transitive bipyramids. The set of bipyramids is the dual of the uniform prisms. It is also a Johnson solid (J13), constructed of regular polygons. It can be seen as two pentagonal pyramids (J2) connected along their bases. As a Johnson solid, it is a convex deltahedron. Although it is face-transitive, it is not a Platonic solid because some vertices have four faces meeting and others have five faces.…mehr

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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In geometry, the pentagonal bipyramid (or dipyramid) is third of the infinite set of face-transitive bipyramids. The set of bipyramids is the dual of the uniform prisms. It is also a Johnson solid (J13), constructed of regular polygons. It can be seen as two pentagonal pyramids (J2) connected along their bases. As a Johnson solid, it is a convex deltahedron. Although it is face-transitive, it is not a Platonic solid because some vertices have four faces meeting and others have five faces.