# SOLUTION: How many interior angles does an undecagon have? A.) 7 B.) 9 C.) 11

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 Question 4298: How many interior angles does an undecagon have? A.) 7 B.) 9 C.) 11 D.) 110 Answer by AnlytcPhil(1278)   (Show Source): You can put this solution on YOUR website!How many interior angles does an undecagon have? A.) 7 B.) 9 C.) 11 D.) 110 A polygon with n sides always has n interior angles. The answer isn't 7 because that's a heptagon or septagon. The answer isn't 9 because that's a nonagon. It isn't 110 because there is no name for a 110-sided polygon. Hint: In the word "undecagon" the "un" means "one" and the "deca" means "ten". What is one plus ten? Edwin