Explain why it is not possible to have a semi-regular polyhedron in which exactly three faces, a triangle, a square and an octagon, meet at each vertex.
Any tips would be much appreciated. Many thanks
Sorry, should have said i tried that when use the triangle obviously only 3 sides, so this would leave either two squares or two octagons meeting at a vertex with the triangle, does that make sense. Is that explanation too simple though! Thought i was missing something maybe. Thank you so much for your reply.