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On Some Semi-Regular Solids

Published online by Cambridge University Press:  03 November 2016

R. B. Hayward
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Extract

Besides the five regular solids, there are other polyhedra which satisfy some, but not all, the conditions of regularity as usually defined, and so may properly be termed semi-regular. Some of these, which have an interest both as geometrical figures and as naturally connected with the geometrical problems of the partition of space and of crystallography, I propose here briefly to discuss.

Type
Research Article
Information
The Mathematical Gazette , Volume 1 , Issue 10 , February 1897 , pp. 73 - 78
Copyright
Copyright © Mathematical Association 1897

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References

page 73 note * I have found it often convenient to use the shorter English words Twelve-Face, Fourteen-Face, etc., instead of the polysyllabic Greek Dodecahedron, Tetrakaide, kahedron, etc.

page 76 note * Cf. an interesting paper by Mrs. Bryant, D.Sc. (Proc. Lon. Math. Soc. xvi. No. 252), “On the Ideal Geometrical Form of Natural Cell-Structure.”