If a polyhedron has 10 faces and 8 vertices, find the number of edges in it.
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Given:
F = 10, V = 8
According to Euler's formula,
F + V - E = 2
⇒ 10 + 8 - E = 2
⇒ 18 - E = 2
⇒ E = 18 - 2
⇒ E = 16
Hence, the number of edges = 16.
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Name the polyhedron that can be made by folding each of the following nets :
(i)
(ii)
(iii)
