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Decagon

Adapted from Wikipedia · Explorer experience

An intricate decagon pattern from a historical Qur'an manuscript, showcasing beautiful Islamic art and design.

What is a Decagon?

A decagon is a special shape in geometry. It has ten sides and ten corners. The word "decagon" comes from old words meaning "ten" and "angles." Decagons can be found in many places, like in buildings, art, and even in nature!

Fun Facts About Decagons

Decagons are very balanced and symmetrical. This means they look the same on all sides. Because of this, they are used in many designs. For example, some Islamic geometric patterns from long ago use decagons. Artists and builders love these shapes because they look nice and even.

Regular Decagons

A regular decagon has all sides the same length. Each corner, or angle, of a regular decagon is always 144°. If you add up all the angles inside a decagon, the total is 1440°. This makes regular decagons very special and easy to work with in math.

You can even draw a regular decagon using just a ruler and compass! This shows how neat and perfect these shapes can be.

Decagons in Nature and Art

Decagons are not just for math class. You can find them in nature too! Some flowers and tiny living things have shapes that look like decagons. Artists also use these shapes in paintings and designs to make things look balanced and beautiful.

Because of their symmetry, decagons help us see the order and beauty in the world around us. They show us how shapes can be both simple and amazing at the same time.

Images

Diagram showing the different symmetry types of a decagon, a ten-sided polygon, used in geometry lessons.
An animation showing how to draw a decagon, a shape with ten sides, as described by the ancient mathematician Euclid.
An animated illustration demonstrating how to construct a decagon (10-sided polygon) using geometric tools.
An animation showing how to draw a regular decagon inside a circle using a straightedge and compass.

Related articles

This article is a child-friendly adaptation of the Wikipedia article on Decagon, available under CC BY-SA 4.0.

Images from Wikimedia Commons. Tap any image to view credits and license.