Octagon

An octagon is a shape that has eight sides and eight angles. The word "octagon" is derived from the Greek words "octa," meaning "eight," and "gonia," meaning "angle." This geometric figure is commonly found in architecture, design, and everyday objects.

Each angle of an octagon measures 135 degrees, and the sum of all the interior angles of an octagon is 1080 degrees. The sides of an octagon are of equal length, and the shape can be regular (all sides and angles are equal) or irregular (sides and/or angles are different).

One way to visualize an octagon is to think of a stop sign, which is a familiar example of an octagonal shape. The stop sign has eight sides and eight angles, making it a real-world example of an octagon.

In summary, an octagon is a polygon with eight sides and eight angles, commonly seen in various contexts and applications.