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25 April, 13:28

The number of vertices in a pyramid is equal to the number of faces. How many vertices does a regular pyramid with 40 edges have?

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  1. 25 April, 13:41
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    There would be 21 vertices.

    Step-by-step explanation:

    Remember that the Euler's formula states that

    V - E + F = 2

    According to the problem V = F, so

    2V - E = 2

    and E = 40. Therefore

    2V - 40 = 2 and, V = 21, and there would be 21 vertices.
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