# What Type of Polygon Has an Interior Angle of 108 Degrees? ## Introduction: Exploring the Properties of a Regular Polygon with an Interior Angle of 108 Degrees

A regular polygon is defined as a two-dimensional shape with equal sides and angles. Regular polygons are made using basic geometrical measurements, the most common being length, angle, and circumference. We will be exploring a polygon with an interior angle of 108 degrees which is often referred to as an octagon because it has eight sides.

The properties of this polygon can be easily determined by applying some basic math concepts. First off, its exterior angles are equal to 72° since the sum of these angles must come to 360°. Knowing that its interior angle measures 108° enables us to calculate the measure for all of its remaining interior angles – each one is 18° less than the previous at 90°-18°=72°; 72°-18°=54°; 54°-18°=36°; 36°-18°=18°; 18→0 (for last side).

The length and circumference can also be ascertained from knowing the interior and exterior angle measurements. The formula for apothem, or radial line from center to midpoint of each side, is Ap = 1/2aTa where “a” = number of sides and “T” = Interior Angle (in this case T = 108). Ap in this instance equals 1/2(8)108 which comes out to 6 units long. Using this apothem along with all eight side lengths (which can equally divide 360 when multiplied), we can approximate the circumference by multiplying π(d+ap) where d = longest line segment around circumference going through originals start point. This ends up approximating 21.99π units long which depending on compatibility between decimals could round up or down slightly .

Overall, our exploration into regular polygons provides a unique look at how different shapes are created and measured from simple geometry equations. There are numerous other methods for examining polygons should you choose to further investigate

## What Type of Polygon Has an Interior Angle of 108 Degrees?

A 108-degree interior angle can be found in several different kinds of polygons, but the most common is an octagon. An octagon is a two-dimensional shape with eight sides and eight angles; the sum of all its angles is 1080 degrees. Each interior angle of an octagon measures 108 degrees, which means that when a regular octagon is drawn on a plane, each of its eight corners have rounded edges instead of sharp points.

An “irregular” octagon may also have a 108-degree interior angle — but not if the shape has fewer than eight sides. It’s important to remember that any polygon with less than four sides is not traditionally considered to be a polygon at all; it’s more commonly referred to as a line, line segment or ray. In addition, it doesn’t matter how many times two consecutive lines meet — every corner must still create an internal angle in order for the shape to be classified as an octagon (and thus contain a 1108 degree interior angle).

Other types of polygons can also feature internal angles of 108 degrees. A sixteen-sided polygon, known as a hexadecagon or hexakaidecagon, features sixteen identical internal angles — each measuring 105 degrees. To put this into perspective: if you draw one large circle inside any regular hexadecagon and connect it to all 16 corners of the inner shapes corners by straight lines, then you’ll form 16 identical triangles with base angles measuring 72 degrees and corresponding apex (or vertex) angles measuring 102 degrees — leaving each inner corner with approximately 106 degree from each other side.

Finally, there’s something known as a star polygon which usually has equal sided spikes spreading out from their center point or node like rays reaching outwards towards infinity – this type of shape could have multiple logarithmic variations wherein and their corresponding interior/exterior point angels can range anywhere between 90°s up until

## Step by Step Guide to Understanding the Properties of a Regular Polygon with an Interior Angle of 108 Degrees

A regular polygon is a type of two-dimensional shape with multiple straight sides that come to an apex at each corner. It can have any number of sides, but it must always have the same length for each side. In this guide, we’ll focus on understanding properties of a regular polygon with an interior angle of 108 degrees.

Let’s first define what an interior angle is within a regular polygon: An interior angle is one located between two sides of the shape that comes together and form a vertex (or point). The sum of all the internal angles in a regular polygon always equals 360 degrees. Since this particular problem refers to understanding a regular polygon with an interior angle specifically set at 108 degrees, then so the remaining internal angles must add up to 252 degrees.

Now that we understand what makes up this specific type of geometry, let’s explore further by breaking down its individual properties:

1) Number of Sides – A regular polygon with an internal angle of 108 degrees has 10 sides;

2) Perimeter – To calculate the perimeter we would use this formula: P = n x l where ‘n’ represents the number of sides and ‘l’ represents side length; in this case 10 x l = perimeter meaning that P = 10 x l;

3) Area – The area is determined using another formula (the area formula), which states A = ½ab sin C where ‘a’ and ‘b’ represent two consecutive side lengths designated and ‘C’ being their shared included angle. In our example, A would equal ½ab sin(108)*;

4) Central Angle – Since our base figure is 10-sided there are 10 central angles as well totaling 1080° since each measure 108°;

5) Apothem Length – Calculating apothem length involves using triangle trigonometric formulas such

## Frequently Asked Questions (FAQs) About a Regular Polygon with an Interior Angle of 108 Degrees

What is a regular polygon?

A regular polygon is a 2-dimensional shape made up of straight sides, all of which are of equal length. All internal angles have the same measure and all outer angles have the same measure. The most common example being the equilateral triangle, which has three equal sides and three equal internal angles (each measuring 60 degrees). Any other polygon with at least 3 sides can be considered a regular polygon if their sides are all the same length and their internal angles are the same measure.

What is an interior angle?

An interior angle is one of the inner angles formed by two straight lines that meet at a given vertex. Interior angles add up to 180 degrees in any triangle and 360 degrees in any convex quadrilateral or regular polygon. Each of these inner angles can be calculated based on how many sides there are in the polygon – for example, an equilateral triangle has 3 sides and 3 interior angles; each angle has a measure of 60 degrees (180/3 = 60).

What does it mean for an interior angle to have a measure of 108 degrees?

When examining any specific type of regular polygon with constant side lengths, like an equilateral triangle with side lengths s, you can use trigonometry to calculate its corresponding interior angle measures. In order for one particular interior angle in this shape to have a measure of 108°, then we can assume that this must be part of an n-sided regular polygon, where every single side is s length long. This means we can say n • s • sin(108°)/2 = area. Using basic algebraic manipulation then leads us to find n = 12, meaning that this specific 108° interior angle must belong to a dodecagon (12 sidedregular polygon) with identical side lengths each equal to s units long!

## Top 5 Facts About Regular Polygons With An Interior Angle Of 108 Degrees

Regular polygons are shapes that have multiple sides of equal length and angles that measure the same. They are often used in geometry, both for their theoretical and aesthetic properties. One particular type of regular polygon is a shape that has an interior angle of 108 degrees – here are five facts about these special shapes:

1. The Number of Sides – A regular polygon with an interior angle of 108 degrees has nine sides. This can be calculated by dividing the total number of degrees in a circle (360 degrees) by the amount in each interior angle (108).

2. Infinity Symbol – When you draw one out, it forms an infinity symbol! This association comes from ancient Egypt and its creation mythology, making this shape have a unique symbolism behind its representation.

3. Special Designation – Regular polygons with an interior angle of 108 degrees are technically designated as “nonagons”. This term was created from the Latin words meaning ‘nine’ (Novem) and ‘angle’ (Agonum), combined to create a more scientific term for this shape’s descriptive features!

4. Creating Nonagon Shapes – Nonagons can be drawn with many different construction tools like compasses or rulers based on what type you need to draw up first. There’s also software available for anyone to use for creating nonagon figures accurately and quickly online or on a device.

5. Geometric Properties – As an extension from their construction methods, the geometric properties of these shapes make them useful for many different types applications such as measuring distances or measuring angles between objects . The possibilities here could be limitless depending on how creative one can get with using this basic geometry form!

## Conclusion: Recap and Summary on Enjoying Properties Of A Regular Polygon With An Interior Angle Of 108 Degrees

At the end of this paper, it is important to recap and summarize the main points discussed regarding regular polygons with an interior angle of 108 degrees. We began by establishing that a regular polygon is a closed shape composed of straight line segments where all interior angles are equal in measure. In this case, the 108-degree interior angle means each segment of the polygon is four times greater in measure than those found in a standard triangle.

We then looked at how to calculate the number of sides with respect to such a polygon: dividing total interior angle (360°) by 108° yields 3.333…., which can be rounded up or down depending on desired outcome. If further accuracy is required, decimal place precision can be used when convenient, though many solutions utilizing regular polygons may only require a whole number.

Finally, we discussed practical examples and applications that might involve these unique shapes. An archway in three-dimensional space is often best suited by using topological solutions involving pentagons or dodecagonal forms; furniture designs requiring certain surface areas are often most efficiently served using slanted elements wherein hexagons or octagons provide structure; and methods for packing objects into containers could see vast optimization if specific heptagonal arrangements were used instead – as only one example out of many possibilities.

In conclusion, though higher order regular polygons exist with more complex features and functions beyond what was covered here , this paper captures the basic mechanical understanding of such shapes – allowing us to take further steps towards enjoying their fascinating properties even more deeply.