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1 mark

A pentagonal prism has 15 edges. How many vertices does it have?

  1. A
    12
  2. B
    10
  3. C
    15
  4. D
    20

Solution & Step-by-step Explanation

An n-gonal prism has:
n+2 faces

3n edges

2n vertices

For a pentagonal prism, n=5:

Number of vertices=2n=2×5=10

Practice this question

Try it yourself before checking the explanation above.

A pentagonal prism has 15 edges. How many vertices does it have?
A
12
B
10
C
15
D
20

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