I am a grade 8 teacher and have come across the term "Triakis" used with Tetrahedron, octahedron, and hexahedron. What does this term refer to, and what's the difference between a triakis polyhedron and one that is not?
I'd also like to know what is meant by the term antiprism, as opposed to prism.Hi Anne,
The online version of the Oxford English Dictionary, under triakis, has
Something interesting that I found when seraching for the word triakis is that the Leopard Shark is Triakis semifasciata The name makes me wonder if its teeth are in the shape of triangular pyramids.
You can find a definition of an antiprism at http://euch3i.chem.emory.edu/proposal/www.li.net/~george/virtual-polyhedra/prisms-info.html
Note:I asked a colleague, Alec Couros, if he knew the meaning of the word triakis and he sent me the following note.
Scroll down to 'leapord shark" - 2nd last paragraph. I think this answers the question.