threesided

Threesided is an adjective used to describe anything that has three sides. In geometry, a polygon with three edges is called a triangle; all three-sided figures share the property that their interior angles sum to 180 degrees. Triangles are the simplest polygons and are foundational to trigonometry, geometry, and many applications in computer graphics and engineering. They are categorized by side lengths—equilateral (all sides equal), isosceles (two sides equal), and scalene (all sides different)—and by angles—acute, right, and obtuse.

Outside pure geometry, the term threesided can appear in branding, design, and media as a descriptive or stylistic cue emphasizing triadic themes, such as balance among three components, perspectives, or stakeholders. In such uses, it is typically part of a brand name, product label, or project title rather than a mathematical statement.

The root is straightforward: from three plus sided, with the sense rooted in the number three and the attribute of having sides. Spelling variations include three-sided or three sided; threesided is sometimes used in compound forms, especially in branding or headings.