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प्रश्न
Look at the shapes given below and state which of these are polyhedra using Euler’s formula.
उत्तर
In the given figure, we have
Faces (F) = 2, Vertices (V) = 1 and Edges (E) = 0
On putting these values in Euler's formula, we get
F + V – E = 2
⇒ 2 + 1 – 0 = 2
⇒ 3 ≠ 2
Hence, these values do not satisfy the Euler's formula. So, it is not a polyhedra.
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