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7. Using Euler's formula, find the values of a, b, c and d.Facesa520Vertices6b12dEdges129C​

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ANSWER:

Using Euler's FORMULA, FIND the values of a, b, c and d. Faces, a, 5, 20, 6. Vertices, 6, b, 12, d. Edges, 12 , 9, c ... 14 – 6 = 8. (ii) b + 5 – 9 = 2 ⇒ 6 = 2 + 9 – 5 = 6. (iii) 20 + 12 – c = 2 ⇒32 – c = 2 ⇒ c ...



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