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VMariaS [17]
2 years ago
7

Can someone help with this I don't understand

Mathematics
1 answer:
zimovet [89]2 years ago
5 0

Answer:

  1. B 15

  2. C Hexagon

Step-by-step explanation:

<h3>1.</h3>

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

__

<h3>2.</h3>

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 <em>hexagon</em>.

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