Dodecagon facts for kids
A dodecagon is a special shape that has 12 straight sides and 12 corners. You can also call it a 12-gon.
Contents
What is a Regular Dodecagon?
When a dodecagon is "regular," it means all its 12 sides are exactly the same length. Also, all its 12 corners (or angles) are equal. Each corner in a regular dodecagon measures 150 degrees. If you add up all these angles, they total 1800 degrees!
How to Find the Area
The area of a shape tells you how much flat space it covers. For a regular dodecagon, there's a special way to figure out its area. It uses something called an "apothem," which is the distance from the center of the shape to the middle of one of its sides.
How to Find the Perimeter
The perimeter of a shape is the total distance all the way around its outside edge. To find the perimeter of a regular dodecagon, you just need to know the length of one side. Since all 12 sides are the same length, you simply multiply the length of one side by 12.
For example, if one side of a regular dodecagon is 5 centimeters long, its perimeter would be 12 times 5 centimeters, which is 60 centimeters.
Images for kids
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A regular skew dodecagon seen as zig-zagging edges of a hexagonal antiprism.
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The Vera Cruz church in Segovia has a dodecagon shape.
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A 1942 British threepence coin, which is shaped like a dodecagon.
See also
In Spanish: Dodecágono para niños
