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using euler formulae F+V-E=2

20+15-20=2

35-20=2

15=2

no it is not equal so

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Q: Can a polyhedron have 20 faces 20 edges and 15 vertices?
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Related questions

What polyhedron has 7 faces 15 edges 6 vertices?

The Euler characteristic requires that Vertices + Faces = Edges + 2 Here that would require 6 + 7 = 15 + 2 or 13 = 17 which is clearly not true. So there cannot be a polyhedron with the stated configuration.


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