Shape, Sides Of Hexagon | Regular Hexagon - Cuemath

Hexagon

A hexagon is defined as a closed 2D shape that is made up of six straight lines. It is a 6 sided polygon which means it has six sides, six vertices, and six interior angles. Let us learn about hexagon shape, the internal angles of hexagon, the properties of hexagon, the diagonals of a hexagon, regular hexagon, and hexagon examples on this page.

1.	What is Hexagon?
2.	Regular Hexagon
3.	Hexagon Sides
4.	Angles of Hexagon
5.	Diagonals of a Hexagon
6.	Types of Hexagon
7.	Properties of Hexagon
8.	FAQs on Hexagon Shape

What is Hexagon?

Hexagon is a two-dimensional geometrical shape that is made of six sides and six angles. Some real-life examples of the hexagon shape are a hexagonal floor tile, pencil cross-section, clock, honeycomb, etc. A hexagon can be either a regular hexagon which has 6 equal sides and 6 equal interior angles, or an irregular hexagon which has 6 sides of different lengths and 6 angles of different measure.

Hexagon Definition

The hexagon definition states that a hexagon is a 6 sided polygon and the name is derived from a Greek word where 'hex' means six, and 'gonia' means corners. This means it has 6 sides, 6 corners, and 6 interior angles.

Regular Hexagon

A regular hexagon is defined as a closed 2D shape made up of six equal sides and six equal angles. Each angle of the regular hexagon measures 120°. The sum of all the interior angles is 120 × 6 = 720°. When it comes to the exterior angles, we know that the sum of exterior angles of any polygon is always 360°. There are 6 exterior angles in a hexagon. So, each of the exterior angles in a regular hexagon is equal to 60°.

Irregular Hexagon

In an irregular hexagon, the 6 sides are of different lengths and the 6 interior angles are of different measures.

Some of the properties that are common to both irregular and regular hexagons are given below:

• There are 6 sides, 6 interior angles, and 6 vertices in both.
• The sum of all 6 interior angles is always 720°.
• The sum of all 6 exterior angles is always 360°.

Hexagon Sides

There are six sides in a hexagon, as shown in the figure given above. All are straight edges and form a closed shape. In a regular hexagon, we have six equal sides, while in an irregular hexagon, at least two of the sides of a hexagon are different in measure. If we take the sum of all six sides, we will get the perimeter of the hexagon.

In a regular hexagon, if we know the value of the perimeter, then the length of each side can be calculated as "Perimeter ÷ 6". For example, if the perimeter of a regular hexagon is 72 units, then the length of each of the hexagon sides is 72 ÷ 6 = 12 units.

Angles of Hexagon

There are six internal angles and six exterior angles in a hexagon. The sum of all six angles of hexagon is 720°, while the sum of its exterior angles is 360°. Observe the properties related to hexagon angles listed below:

Angles of a Regular Hexagon

• The measurement of each interior angle in a regular hexagon is 720° ÷ 6 = 120°.
• The measurement of each exterior angle of a regular hexagon is 360° ÷ 6 = 60°.

Angles of an Irregular Hexagon

• At least two of the angles are of different measurements in an irregular hexagon.

Diagonals of a Hexagon

A diagonal is a segment of a line, that connects any two non-adjacent vertices of a polygon. The number of diagonals of a polygon is given by n(n-3)/2, where 'n' is the number of sides of a polygon. The number of diagonals in a hexagon is given by, 6 (6 - 3) / 2 = 6(3)/2, which is 9. Out of the 9 diagonals, 3 of them pass through the center of the hexagon.

Types of Hexagon

Hexagons can be classified based on their side lengths and internal angles. Considering the sides and angles of a hexagon, the types of the hexagon are:

• Regular Hexagon: This is a hexagon that has equal sides and angles. All the internal angles of a regular hexagon are 120° each. The exterior angles measure 60° each. The sum of the interior angles of a regular hexagon is 6 times 120°, which is equal to 720°. The sum of the exterior angles is equal to 6 times 60°, which is equal to 360°.
• Irregular Hexagon: This is a hexagon that has sides and angles of different measurements. All the internal angles are not equal to 120°. But, the sum of all interior angles is the same, i.e., 720°.
• Convex Hexagon: This is a hexagon in which all the interior angles measure less than 180°. Convex hexagons can be regular or irregular, which means they can have equal or unequal side lengths and angles. All the vertices of the convex hexagon are pointed outwards.
• Concave Hexagon: This is a hexagon in which at least one of the interior angles is greater than 180°. There is at least one vertex that points inwards.

Properties of Hexagon

A hexagon is a flat two-dimensional six sided shape. It may or may not have equal sides and angles. Based on these facts, the important properties of a hexagon are as follows:

• It has six sides, six edges, and six vertices.
• All the side lengths are equal or unequal in measurement.
• All the internal angles are equal to 120° each in a regular hexagon.
• The sum of the internal angles is always equal to 720°.
• All the external angles are equal to 60° each in a regular hexagon.
• The sum of the exterior angles is equal to 360°.
• The number of diagonals that can be drawn in a hexagon is 9.
• A regular hexagon is also a convex hexagon since all its internal angles are less than 180°.
• It can be split into six equilateral triangles.
• It is symmetrical as each of its side lengths is equal.
• The opposite sides of a regular hexagon are always parallel to each other.
• The area of a regular hexagon is 3√3a2/2 square units, where a is the side length.
• The hexagon's perimeter can be found by adding the lengths of all six sides.

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