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11 February, 10:20

A solid has 14 faces and 12 vertices. How many edges does the solid have

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  1. 11 February, 14:09
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    Number of faces + (Number of vertices - Number of edges) = 2

    14 + (12 - x) = 2

    12 - x = 2 - 14

    12 - x = - 12

    - x = - 12 - 12

    -x = - 24

    x = 24

    There would be 24 edges.

    (Credit to Taskmasters who answered a question similar previously)
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