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  3. 8th Class
  4. Mental Ability
  5. Mensuration

8th Class Mental Ability Mensuration Question Bank Mensuration

  • question_answer
    A polyhedron has 6 vertices and 12 edges. It is a

    A) tetrahedron      

    B)                   octahedron

    C) icosahedron        

    D)       dodecahedron

    E) None of these

    Correct Answer: B

    Solution :

    Explanation Option [b] is correct. Using Euler's Formula, \[F+V-E=2\] \[\Rightarrow \]  \[F+612=2\] \[\Rightarrow \]  \[F=2+126=8\] So, it is a octahedron.


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