Augmented Dodecahedron

 

 

       A general dodecahedron is a polyhedron having 12 faces. Examples include the decagonal prism, elongated square dipyramid (Johnson solid ), hexagonal dipyramid, metabidiminished icosahedron (), pentagonal antiprism, pentagonal cupola (), (regular) dodecahedron, rhombic dodecahedron, snub disphenoid (), triakis tetrahedron, and undecagonal pyramid.

    The augmented dodecahedron can be obtained by cumulating a pentagonal pyramid on the top of the regular dodecahedron ,and it is known as the Johnson solid .

 

 

 

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Reference   http://www.mathworld.wolfram.com