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A polygon with 7 sides can be triangulated into ________

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A polygon with 7 sides can be triangulated into ________

(a) 7

(b) 14

(c) 5

(d) 10

I have been asked this question at a job interview.

My enquiry is from Strong Induction and Well-Ordering topic in division Induction and Recursion of Discrete Mathematics

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Best answer
Right answer is (c) 5

Explanation: A simple polygon with n sides can be triangulated into n-2 triangles, where n > 2.

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