 # Unveiling the Mysteries of Heptagons: A Guide to Seven Sided Shapes

Comprehensive Definition, Description, Examples & Rules

Edulyte Maths Lessons

Learn Maths anytime, anywhere

What will you learn

Heptagons in geometry are another interesting aspect of math. Geometry, at large, provides a way through which we can look into the intricate universe of shapes, lines, forms, and spaces that constitute our immediate surroundings. Geometry digs deeper into the nature of the cosmos ranging from simple circles and squares to complex fractals and polyhedra.

The guide will see us embark on a mission of unraveling the secrets behind the ‘heptagon’, which is a mysterious geometric figure, a rare seven sided shape or polygon.

## What is a Heptagon?

The word ‘heptagon’ has been derived from the Greek words “hepta,” meaning seven, and “gonia,” meaning angle. A heptagon is a polygon that boasts seven sides and seven angles. It consists of a closed two-dimensional curve made up of 7 straight sides meeting at 7 points on its ends. The term ‘heptagon’ spells what it means – a figure of seven angles.

Understanding Heptagonal Shapes

Anything linked to a heptagon is referred to as “heptagonal”. A heptagonal room, for example, must have seven sides and seven angles as a heptagonal form is any shape having seven sides. This word helps with clarity in discussions on seven-sided objects in geometry, architecture, and design, among other subjects.

## Characteristics of Heptagons

It goes without saying that a heptagon’s seven sides are its most important feature. The figure’s interior area is formed by the two vertices that link each of these seven sides. The heptagon is a fascinating subject for geometry study since it is a form that successfully combines simplicity and complexity.

The Sum of Interior Angles in a Heptagon

To be able to appreciate the essence of a heptagon, one must be familiar with the internal angles. The following formula may be used to calculate the total sum of internal angles in a polygon: (n-2) * 180°, where ‘n’ is the number of sides. This computation is as follows for a heptagon:

(7 – 2) * 180° = 5 * 180° = 900°

Hence, the sum of the interior angles in a heptagon is 900 degrees. Each interior angle in a heptagon forms an equal fraction of this total.

## Angles in a Heptagon

There are seven equal-sized interior angles in a heptagon. Use this formula to get the dimensions of each interior angle in a heptagon:

Measure of each interior angle = Number of interior angles / Number of sides

For a heptagon:

Measure of each interior angle = 900° / 7 ≈ 128.57° (rounded to two decimal places)

Therefore, each interior angle in a heptagon is approximately 128.57 degrees.

How to Calculate the Interior Angles of a Heptagon

Calculating the measure of each interior angle in a heptagon is quite simple using the formula. If you know the total measure of an interior angle and need to find each angle, simply divide the total by the number of angles, which, in this case, is seven.

Interior Angle = (n – 2) * 180° / n

Where:

• “n” represents the number of sides in the polygon.

In the case of a heptagon, “n” is 7 because the shape has seven sides. So, you can plug this value into the formula and calculate the interior angle:

Interior Angle = (7 – 2) * 180° / 7 Interior Angle = 5 * 180° / 7 Interior Angle ≈ 900° / 7 Interior Angle ≈ 128.57°

So, the interior angles of a heptagon are approximately 128.57 degrees each.

## Heptagon Sides

Line segments which connect the 7 vertices of the figure make heptagon sides. However, although they can be of different lengths, they remain straight and their number always stays at seven.

Measure and Classify Heptagon Sides

Side lengths of a heptagon can be determined with the use of conventional units like centimeters or inches. One can take the measurements of each heptagon side, and then compare them to classify them. Regular heptagon has all sides equal in length, while on the other hand, irregular heptagon has sides of varying sizes.

## Area of a Heptagon

The Formula for Calculating the Area of a Heptagon

Determining the area of a heptagon entails slightly more complexity than calculating the area of shapes such as squares or triangles. The following formula is used to find out the heptagon area:

Area of a heptagon = (7/4) × s^2 × (1/tan(π/7))

Here, ‘s’ represents the length of one side of the heptagon whereas ‘π’ denotes the mathematical constant pi. This formula makes use of the tangent of π/7, which is needed for precise calculation of area.

Real-World Applications of Heptagons

To some people, heptagons may seem abstract but they also have practical utility in the real world.

1. Stop Signs: Although stop signs have eight sides, they are derived from heptagons to maximize their visibility.
2. Crystallography: Heptagons can be observed in specific minerals and crystals when studying crystal structures. Our understanding of atomic and molecular arrangements in these substances is thus improved.
3. Art and Design: Because of their symmetry, regular heptagons are found to be popular in art, design, and architectural elements.

Step Up Your Math Game Today!

Free sign-up for a personalised dashboard, learning tools, and unlimited possibilities! ## Key Takeaways

1. The principles of geometry form a basis for the study and description of figures and constructions that are widely utilized in different fields like architectural design and engineering. One can find answers to questions such as ‘heptagon has how many sides?’, ‘how to calculate heptagon area?’, and ‘how to find out the measure of heptagon angles and heptagon interior angles?’ in this article.

2. Calculation of angles has universal application in fields such as engineering to ensure the structural integrity and safety of several kinds of constructions.

3. Heptagons find practical applications in real life. For example, stop signs that are designed for enhanced visibility and crystallography. This also aids our understanding of atomic and molecular arrangements in crystals.

4. Calculating heptagonal properties, including the area or interior angles requires specific formulas and mathematical calculations.

5. This guide illustrates how the study of heptagons exemplifies the intersection of mathematics and our daily experiences, enriching our understanding of structures and shapes in our environment

## Quiz

Check your score in the end

Quiz

Check your score in the end
Question of

#### Question comes here

A heptagon possesses seven interior angles.

To calculate the area of a heptagon, use the formula: Area = (7/4) × s^2 × (1/tan(π/7)), where ‘s’ represents the length of one side of the heptagon.

Heptagons or heptagonal elements are found in everyday objects such as stop signs, some crystal structures, and various artistic designs.

The sides of a heptagon are determined by counting the number of line segments that connect the seven vertices of the polygon. Each of these straight-line segments is a side of the heptagon.   ### Subscribe now for discounts, learning resources, blogs and guides. We do not spam.  ### Subscribe now for discounts, learning resources, blogs and guides. We do not spam. PTE Tutorials: Customised Packages for Every Learner

Standard

\$75 AUD

One time 