Find the missing value indicated by the question mark. Use the following formula. (Number of vertices) -

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Find the missing value indicated by the question mark. Use the following formula.

(Number of vertices) - (number of edges) + (number of faces) = 2


Number of Vertices

Number of Edges

Number of Faces

12

?

20

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A Survey of Mathematics with Applications

ISBN: 978-0134112107

10th edition

Authors: Allen R. Angel, Christine D. Abbott, Dennis Runde

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