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प्रश्न
If a polyhedron has 10 faces and 8 vertices, find the number of edges in it.
योग
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उत्तर
Faces = 10
Vertices = 8
using Eulers formula,
F + V – E = 2
10 + 8 – E = 2
-E = 2 – 18
E= 16
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