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How many faces, edges and vertices does a pyramid have with n sided polygon as its base? - Mathematics

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Question

How many faces, edges and vertices does a pyramid have with n sided polygon as its base?

Sum

Solution

In a pyramid, the number of vertices is 1 more than the number of sides of the polygon base, i.e. vertices = n + 1

Also, the number of faces is 1 more than the number of sides of the polygonal base, i.e. faces = n + 1

But the number of edges is 2 times the number of sides of the polygonal base, i.e. edges = 2n. 

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Chapter 6: Visualising Solid Shapes - Exercise [Page 200]

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NCERT Exemplar Mathematics [English] Class 8
Chapter 6 Visualising Solid Shapes
Exercise | Q 86. | Page 200

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