alleryBases of which polygon give a prism a total of 15 edges?
ATriangle
BHeptagon
CPentagon
DHexagon
Answer & Solution
Correct answer: C. Pentagon
1. A prism whose base has n sides has n edges on each base and n joining edges.
2. Total edges = 3n.
3. 3n = 15 gives n = 5.
4. A base with 5 sides is a pentagon.
_Source: Math Is Fun, Prisms (mathsisfun.com/geometry/prisms.html), Bases_
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