An 8-sided shape is called an octagon. The term ‘octagon’ comes from the Greek words ‘okto’ meaning eight and ‘gonia’ meaning angle. An octagon has eight sides and eight angles. In a regular octagon, all sides and angles are equal. Each internal angle of a regular octagon measures 135 degrees, and the sum of all internal angles is 1080 degrees.
Octagons are commonly seen in everyday life, such as in stop signs, which are designed as regular octagons to ensure visibility and uniformity. They are also used in architecture and design due to their symmetrical and aesthetically pleasing properties.