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An (\(n - 2)^2\) sided figure has n diagonals. Find the number n diagonals for...

Mathematics
JAMB 1987

An (\(n - 2)^2\) sided figure has n diagonals. Find the number n diagonals for a 25-sided figure

  • A. 7
  • B. 8
  • C. 9
  • D. 10
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Correct Answer: Option A
Explanation

(n-2)\(^2\) = 25

n - 2 = 5

n = 5 + 2 = 7

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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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WAEC and NECO CBT Software for Computers and Laptops - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts