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##### Asked by: Marry Courty

technology and computing computer peripherals# What is the diagonal of Nonagon?

Last Updated: 24th June, 2020

**nonagon**, or enneagon, is a polygon with ninesides and nine vertices, and it has 27 distinct

**diagonals**.The formula for determining the number of

**diagonals**of ann-sided polygon is n(n - 3)/2; thus, a

**nonagon**has 9(9 -3)/2 = 9(6)/2 = 54/2 = 27

**diagonals**.

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Accordingly, how many diagonal does a Nonagon have?

Moreover, since each **diagonal** connect twovertices, we **need** to take a half from n(n-3) to eliminatethe repetitions of **diagonals**. Finally, the formula becomes0.5n(n-3). Now put n to be 9, the number of **diagonals** in a**nonagon** equals 0.5*9*(9–3)=27.

Likewise, what is a Nonagon in math? **Nonagon**. more A 9-sided polygon (a flat shapewith straight sides). (Also called an Enneagon) See:Polygon.

Similarly, you may ask, what is diagonal formula?

**Diagonal Formula**. Any square that has two**diagonals** are equal in length to each other. **DiagonalFormula** is used to calculate the polygon **diagonals**.**Diagonals** are a line joining two nonadjacent vertices of apolygon i.e. a **diagonal** joins two vertices of a polygonexcluding the edges of the figure.

How do you find diagonals?

To **find** the total number of **diagonals** in apolygon, multiply the number of **diagonals** per vertex (n - 3)by the number of vertices, n, and divide by 2 (otherwise each**diagonal** is counted twice).