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manodesi524

  • 3 years ago

need help. Can anyone help?

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  1. maria74123
    • 3 years ago
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    Ask away :)

  2. manodesi524
    • 3 years ago
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    Do you know Euler's Formula?

  3. maria74123
    • 3 years ago
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    Not familiar with it, sorry.

  4. kirbykirby
    • 3 years ago
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    I do

  5. manodesi524
    • 3 years ago
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    You do! E-F+V=2?

  6. kirbykirby
    • 3 years ago
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    Oh that one. Oh well this one too lol :)

  7. kirbykirby
    • 3 years ago
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    it's not F+V-E = 2?

  8. manodesi524
    • 3 years ago
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    Ok here is my question. First, how do I thank you for your help? Second, what is the sum of the number of vertice, edges, ad faces of a dodecahedron?

  9. kirbykirby
    • 3 years ago
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    Ok well the prefix "dodeca" is telling 12, so it's a polyhedron with 12 faces (F)

  10. manodesi524
    • 3 years ago
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    Right. But what about the other 2 parts?

  11. kirbykirby
    • 3 years ago
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    Well you can try counting how many vertices there would be, in this case there are 20

  12. manodesi524
    • 3 years ago
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    I'm sure there is a systematic way :( Thanks for your help though

  13. kirbykirby
    • 3 years ago
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    From there you can use the formula to find out how many edges you have F+V-E = 2 12+20-E=2 32-E=2 30 = E

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