Question

If for a solid , F=7, V= 7 ,then E= ? (Use Eulers
formula)​

Answer 1

Euler's formula, either of two important mathematical theorems of Leonhard Euler. ... It is written F + V = E + 2, where F is the number of faces, V the number of vertices, and E the number of edges. A cube, for example, has 6 faces, 8 vertices, and 12 edges and satisfies this formula.

So,

F+V = E+2

7+7 = E+2

14 = E+2

14-2 = E

therefore E = 12

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