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1. A polyhedron has 6 vertices and 9 edges. How many faces does it have? a. 3 b. 5 c. 7 d. 9 2. A polyhedron has 25 faces and 36 edges. How many vertices does it have? a. 11 b. 12 c. 13 d. 14

Mindee Nelson

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Donald Ward on June 21, 2018

V the number of vertices,the number E of edges,F - number of faces:Euler's polyhedron formula:V - E + F = 21. F = E - V + 2F = 9 - 6 + 2 = 5Answer: (A ) 52. V = E - F + 2V = 36 - 25 + 2 = 13Answer: (C ) 13


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