## Is a nonagon regular or irregular?

Nonagon classifications

Regular nonagon Irregular nonagon
All sides and interior angles are equal Not all sides and angles are equal

### What is a regular decagon?

A regular decagon is a decagon with all sides equal in length and all the angles equal in measure. In a regular decagon, the interior angles add up to 1440 degrees, and the exterior angles add up to 360 degrees.

How many sides does a regular nonagon have?

9 sides
A nonagon is a polygon made up of 9 sides and 9 angles. Nonagon = Nona + gon where Nona means nine and gon means sides.

How many lines of symmetry does a regular nonagon have?

9 lines of symmetry
Line of Symmetry of Regular Polygon A regular polygon has all sides equal Equilateral triangle has 3 lines of symmetry Square has 4 lines of symmetry Regular pentagon has 5 lines of symmetry Regular hexagon has 6 lines of symmetry Regular heptagon has 7 lines of symmetry Regular octagon has 8 lines of symmetry Regular …

## How many diagonals are there in a regular nonagon?

Formula for number of diagonals in a polygon of n sides: Thus, a nonagon has 27 diagonals.

### What is a regular dodecagon?

A dodecagon is a 12-sided polygon. Several special types of dodecagons are illustrated above. In particular, a dodecagon with vertices equally spaced around a circle and with all sides the same length is a regular polygon known as a regular dodecagon.

What is regular Heptagon?

Regular heptagon. A regular heptagon, in which all sides and all angles are equal, has internal angles of 5π/7 radians (1284⁄7 degrees). Its Schläfli symbol is {7}.

How many diagonals does a regular nonagon have?

## How many sides does a regular polygon?

24 sides
Thus, the regular polygon has 24 sides.

### What is the interior angle of a regular nonagon?

140°
Each angle of a regular nonagon is of 140°. A nonagon in which all sides are not equal and all angles are not equal. The measure of its angles are different but total sum of all its interior angles is always 1260°.