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If a Polyhedron Has 10 Vertices and 7 Faces, Find the Number of Edges in It.

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Question

If a polyhedron has 10 vertices and 7 faces, find the number of edges in it.

Sum
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Solution

Vertices = 10
Faces = 7
Using Eulers formula,
F + V – E = 2
7 + 10 – E = 2
-E = -15
E = 15

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Chapter 19: Representing 3-D in 2-D - Exercise 19 [Page 220]

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Selina Concise Mathematics [English] Class 8 ICSE
Chapter 19 Representing 3-D in 2-D
Exercise 19 | Q 2 | Page 220
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