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Thread: semi-regular polyhedron with exactly 3 faces

  1. #1
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    semi-regular polyhedron with exactly 3 faces

    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
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  2. #2
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    Re: semi-regular polyhedron with exactly 3 faces

    Tips: Try to draw the net
    Thanks from dermott131
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  3. #3
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    Re: semi-regular polyhedron with exactly 3 faces

    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.
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  4. #4
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    Re: semi-regular polyhedron with exactly 3 faces

    Dunno...this may help:

    Polyhedra
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