Steven Dutch, Natural and Applied Sciences, University of Wisconsin - Green Bay
15 members. All three possible pentagonal base views shown.
There are only three members, and given the large number of similar faces, all are symmetrical. Both pentagonal base views are the same. One of the possible quadrilateral base face views is shown to reveal the symmetry. 57 and 58 have mirror symmetry in two directions, 59 has twofold symmetry.
Created 03 October 2016, Last Update 12 October 2016
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