# Polygon Names

Want to know more about polygons? We will help you with this in this article.

In geometry, a polygon is a plane figure defined by a finite amount of straight-line segments linked to create a closed polygonal chain (or polygonal circuit).

These segments of a polygonal circuit are termed its sides. The points where \(2\) edges meet up are termed the polygon’s vertices (singular: vertex) or its corners. The inside of a solid polygon is occasionally called the body.

The **regular** polygon has all of its angles equivalent as well as all of its sides equivalent, if not it’s** irregular**

Some info on the meaning of a polygon which can with any luck assist you in remembering:

**Flat-**Signifies it is a plane figure or \(2\)-dimensional**Straight lines**– Known as segments in geometry**Enclosed**– Every line connects end-to-end and forms a figure without any openings.

## Related Topics

- Area and Perimeter
- Perimeters and Areas of Squares
- Perimeters and Areas of rectangles
- How to Find the Perimeter of Polygons?

## How is a polygon with N-sides named?

When it comes to its names, polygons have a quite basic name for the first \(10\) or \(20\) names. They utilize a fundamental prefix labeling system. It consists of di, tri, tetra, Penta, etc.

An n-gon is a polygon that has n sides; for instance, a triangle is a \(3\)-gon. In easier terms, a \(24\)-sided polygon. You can usually call it a \(24\)-gon.

### Triangle:

Triangles are polygons with \(3\) edges and \(3\) vertices. It’s an example of the fundamental shapes seen in geometry. With Euclidean geometry and \(3\) points, whenever non-collinear, establish a distinctive triangle.

### Quadrilateral:

Within geometry, a quadrilateral is a \(4\)-sided polygon, which has \(4\) edges (sides) as well as \(4\) corners (vertices). The name comes from the Latin terms Quadri, a variation of \(4\), and latus, signifying “side.” A different term for it is called tetragon, which comes from the Greek language.

Quadrilaterals are either straightforward (not self-intersecting), or complicated (self-intersecting, or crossed). Straightforward quadrilaterals will be concave or convex.

Inside angles of a straightforward (and planar) quadrilateral, ABCD equal \(360\) degrees of an arc.

### Pentagons:

Within geometry, a pentagon (from the Greek representing *five* and *gonia* signifying *angle*) is any \(5\)-sided polygon or a \(5\)-gon. The total of the inner angles in a straightforward pentagon equals \(540°\).

A pentagon can be straightforward or self-intersecting. A self-intersecting *regular pentagon* (or a *star pentagon*) is known as a pentagram.

### Hexagons:

Within geometry, a hexagon (comes from the Greek *hex*, which means “six”, along with *gonía*, which means “corner, angle”) is a \(6\)-sided polygon or a \(6\)-gon. The sum of the inner angles of any straightforward (non-self-intersecting) hexagon equals \(720°\).

### Heptagons:

Within geometry, heptagons or septagons are a \(7\)-sided polygon or a \(7\)-gon.

Heptagons are seven-sided shapes, or more precisely, seven-sided polygons. Normal heptagons have \(7\) identical sides as well as \(7\) identical angles.

The amount of the angles of a normal Heptagon equals \(900°\).

### Octagons:

Within geometry, octagons are \(8\)-sided polygons or \(8\)-gons. The total of all of their inner angles equals \(1080°\). Like every polygon, the outer angles equal \(360°\).

### Nonagons:

Nonagons are polygons having nine sides as well as nine angles. Nonagon = Nona + gon whereas Nona stands for \(9\) and gon stands for sides.

Nonagons have nine angles. The total of angles in a nonagon equals \(1260°\). Nonagons have nine outer angles. The total of the angles of the outer angles for nonagons is \(360°\).

### Decagons:

Decagons are polygons with \(10\) sides, \(10\) inner angles as well as \(10\) ten vertices. The total quantity of the inner angles of a straightforward decagon equals **\(1440°\)**.

### Polygon Names –** **Example 1:

Write the name of the figure.

**Solution:**

This shape is a \(7\)-sided polygon so it is a heptagon.

### Polygon Names –** **Example 2:

Write the name of the figure.

**Solution:**

This shape is a \(3\)-sided polygon so it is a triangle.

## Exercises for Polygon Names

**Write the **name of the **polygons.**

1)

2)

- \(\color{blue}{Octagon}\)
- \(\color{blue}{Quadrilateral}\)

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