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Published online by Cambridge University Press: 03 November 2016
This interesting solid has tended too much in the past to be classified as “for adults only” (and for not too many of them); but because it supplies the answer to a question which every intelligent youngster asks himself, I think it is worth while to try and smooth the path of any teacher who wants to let children of (say) 13 share in some of its treasures.
page no 255 note * Otherwise 6 of our 12 rhombi will be altered into trapezia.
page no 256 note * These can be used for teaching the volume of a pyramid.