



 
KJ, My favourite triangular prism is a Toblerone chocolate bar. The children next door have a swing set in the shape of a triangular prism. A sheet of plywood or cardboard leaning against a wall forms a triangular prism. With a triangular pyramid, sometimes called a tetrahedron, I came up blank. I think there might be some triangular pyramids in the trusses in my attic but I can't get up there. If you find a triangular pyramid in your house or in the school let me know. Penny
Triangular pyramids (tetrahedra): (1) 4sided gaming die RD
 


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