A 14-sided figure is known as a tetradecagon. It is a polygon that has fourteen straight edges and fourteen vertices. The interior angles of a tetradecagon can be calculated using the formula (n-2) \times 180 degrees, where n is the number of sides. For a tetradecagon, the sum of the interior angles is 2160 degrees. Tetradecagons can be regular or irregular. A regular tetradecagon has all sides and angles equal, while an irregular one does not. These shapes can be found in various fields, including geometry, architecture, and art, where they may be used in design and structural elements.