7. Using Euler’s formula find the unknown.
We know the Euler Formula:
F + V = E + 2:
hence we can easily find the unknown let say 'F, V, and E'
So, For Ist case:
F + 6 = 12 + 2 or F = 8, hence the number of faces in Ist case is 8.
For IInd Case;
5 + V = 9 + 2 or V = 6, hence the number of vertices in IInd case is 6.
For IIIrd case;
20 + 12 = E + 2 or E = 30, hence the number of Edges in the IIIrd case is 30.
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