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anonymous

  • 5 years ago

please help me

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  1. anonymous
    • 5 years ago
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    How?

  2. anonymous
    • 5 years ago
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    i need help with a few geometry questions

  3. anonymous
    • 5 years ago
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    the first one is calculate the number of vertices of the solid, given that it has 7 faces, 2 pentagons and 5 triangles

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  4. anonymous
    • 5 years ago
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    10... count the "points"

  5. anonymous
    • 5 years ago
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    However I don't see any triangles I see 5 rectangles

  6. anonymous
    • 5 years ago
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    the second one is: Determine whether each solid is a polyhedron.

  7. anonymous
    • 5 years ago
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    well for the first one it says to uses this formula f+v=e+2

  8. anonymous
    • 5 years ago
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    Figure out what f v and e are. I think f is faces and v is verticies

  9. anonymous
    • 5 years ago
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    f is number of faces, v is vertices, e is edges

  10. anonymous
    • 5 years ago
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    That would be faces + vertices = edges + 2 faces = 7, (those are flat surfaces) edges = 15 (those are like the edge of a table) 7 + v = 15 + 2 7 + 10 = 15 + 2 Vertices = 10

  11. anonymous
    • 5 years ago
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    The second question is yes for both.. Definition is a solid with flat faces

  12. anonymous
    • 5 years ago
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    decide whether the polyhedron is regular and/or convex

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