8th Class Mathematics Visualising Solid Shapes

  • question_answer 1)
                    Can a polyhedron have 10 faces, 20 edges and 15 vertices?

    Answer:

                    Here \[F=10\] \[E=20\] \[V=15\] So,          \[F+V=10+15=25\] \[E+2=20+2=22\] \[F+V\ne \,E+2\] \[\therefore \] Such a polyhedron is not possible.


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