Decagons are polygon shapes that consist of ten sides and angles. They are also called decagons, decagones, decagyns, and decemglyphs. Decametric shapes, dekagons, and 10-gons are other synonyms for decagons that are used interchangeably. Geometrically, decagons have several interesting properties that make them useful in different fields of study. For instance, a regular decagon has symmetrical sides and angles making it ideal for constructing regular polygonal shapes. It can also be divided into smaller polygons with equal areas or used in tessellations. Decagons play an essential role in mathematics, architecture, engineering, and many other fields that rely on precise measurements and calculations.