Option 2 : 14

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**Given: **

Regular heptagon has 7 sides

**Formula Used:**

Number of diagonals = n (n - 3)/2

**Calculation:**

Number of diagonals = n (n - 3)/2

n = 7

⇒ Number of diagonals = 7 (7 - 3)/2

⇒ Number of diagonals = (7 × 4)/2

⇒ Number of diagonals = 14

∴ A regular heptagon has 14 diagonals.

The correct option is 2 i.e. 14

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