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A tree with n vertices has n-1 edges.

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Q: A tree with n vertices has edges?
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How many edges and vertices and edges are in an hexagonal pyramid?

A pyramid with an n-sided base will have n + 1 vertices, n + 1 faces, and 2n edges. 12 edges, 7 vertices, 12 edges


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How many edges and vertices does a trianglur pyramid have?

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