Pentagonal dodecahedron


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1) Similarly (and not surprisingly) the Dutch artist Gerard Caris always carries a small pentagonal dodecahedron made up of twelve regular pentagons with him, so that he is always prepared to demonstrate the potentially infinite symmetrical mega-structures which can be made by combining regular pentagons and the solids constructed from them.
theo]): a pentagonal dodecahedron shape (Model 1) and a tetrakaidecahedral cell shape (Model 2).
Gibson and Ashby [25-27] based their theoretical derivation on the pentagonal dodecahedron mechanical mode, which is approximative to the actual bubble structure, and then developed the calculation equation (Eqs.