| Although Lester must still see doctors on a semiregular basis for checkups, his health has returned to normal. |
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| While one of the semiregular polyhedra was mentioned by Plato, their first serious study is attributed to Archimedes. |
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| In a semiregular tessellation, there is an isometry of the plane carrying any vertex to any other vertex. |
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| Now try to see which of these vertex figures cannot be continued to give a semiregular tiling of the whole plane. |
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| Additionally, the notion of so called weakly semiregular graphs is introduced, they are considered as a possible generalization of traditional bidegreed semiregular graphs. |
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| It will be seen below that this semiregular polyhedron is of importance in its relationship to periodic minimal surfaces serving as a conceptual reference. |
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