What Is The Shape With 12 Sides Called?
Geometry is an interesting subject that deals with shapes, their properties, and their relationships with each other. One of the basic concepts in geometry is the number of sides that a shape can have. Shapes with different numbers of sides have different names, and in this article, we will explore the shape with 12 sides and its name.
What is a Polygon?
A polygon is a closed shape that has straight sides. The word polygon comes from the Greek words 'poly' meaning many and 'gonia' meaning angles. Polygons are named based on the number of sides they have. For example, a shape with three sides is called a triangle, a shape with four sides is called a quadrilateral, and so on.
The Shape with 12 Sides
The shape with 12 sides is called a dodecagon. The word dodecagon comes from the Greek words 'dodeka' meaning twelve and 'gonia' meaning angles. A dodecagon is a regular polygon, which means that all its sides and angles are equal.
Properties of a Dodecagon
A dodecagon has 12 sides, 12 angles, and 78 diagonals. The interior angles of a dodecagon add up to 1800 degrees, and each angle measures 150 degrees. The exterior angles of a dodecagon add up to 360 degrees, and each angle measures 30 degrees. The perimeter of a dodecagon is equal to the sum of its sides, while its area can be calculated using the formula:
where s is the length of each side of the dodecagon.
Real-Life Examples of Dodecagons
Dodecagons can be found in many real-life objects and structures. For example, a soccer ball, also known as a football, is made up of 12 pentagons and 20 hexagons, which together form a dodecahedron, a three-dimensional shape with 12 faces. The stop sign, which is used to indicate the need to come to a complete stop, is also a dodecagon. The design of some stadiums and buildings also incorporates dodecagons.
Conclusion
In conclusion, the shape with 12 sides is called a dodecagon. It is a regular polygon with 12 equal sides and angles. Dodecagons can be found in many real-life objects and structures, such as soccer balls, stop signs, and buildings. Understanding the properties of dodecagons and other polygons is important in many fields, such as engineering, architecture, and mathematics.
So, next time you come across a shape with 12 sides, you know that it is called a dodecagon!
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