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Can someone help with this I don't understand

Can someone help with this I don't understand-example-1
User Pansy
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1 Answer

2 votes

Answer:

1. B 15

2. C Hexagon

Explanation:

1.

Euler's formula tells you the relation between numbers of faces, vertices, and edges of a polyhedron is ...

F +V = E +2

Solving for the number of faces, we have ...

F = E +2 -V

For the given numbers, the missing number is ...

F = 26 +2 -13 = 15

Faces: 15

__

2.

The cross section (shaded figure) is described by the number of edges it has. You can count them. There are three pairs of parallel edges, for a total of 6 edges. That makes the figure a hexagon.

User Braveterry
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