Brain › Science: MathematicsHow many sides does a pentagon have?9564AnswerThe correct answer is B) 5.More Science: Mathematics questionsIn Roman Numerals, what does XL equate to?What comes after a Million, a Billion, and a Trillion?Which two men are credited with independently discovering differential calculus?What prime number comes next after 19?What is the mathematician Euler's first name?How many sides does a Möbius strip have?Play Brain · Practice