The number of diagonals in a heptagon is(A) 21 (B) 42 (C) 7 (D) 14 – InterviewSolution

1.

The number of diagonals in a heptagon is(A) 21 (B) 42 (C) 7 (D) 14

Answer»

(D) 14

From the formula, diagonal = n(n – 3)/2

Where n = number of sides in a polygon.

There are 7 sides in a heptagon.

So, d = 7(7 – 3)/2

= 7(4)/2

= 28/2

= 14

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