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It is: 0.5*(144-36) = 54 diagonals

Q: What are the number of diagonals for a regular polygon with 12 sides?

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The five sided Polygon has 5 diagonals

You can use the formula D=S-2 where D is the number of possible diagonals and S is the number of sides the polygon has.

The formula is: 0.5*(n2-3n) = diagonals whereas n is the number of sides of the polygon

A polygon with 14 diagonals will have 7 sides

209

Related questions

A 7 sided polygon has 14 diagonals

The five sided Polygon has 5 diagonals

Number of diagonals = 1/2*(n2-3n) where n = the number of sides of the polygon.

You can use the formula D=S-2 where D is the number of possible diagonals and S is the number of sides the polygon has.

It has 9 sides and it can be an regular or a irregular polygon which is called a nonagon Check: 0.5*(81-27) = 27 diagonals

38 diagonals

It has 20 diagonals

It is: 0.5*(n2-3n) = diagonals whereas n is the number of sides of the polygon

The formula is: 0.5*(n2-3n) = diagonals whereas n is the number of sides of the polygon

A polygon with 14 diagonals will have 7 sides

pentagon

11