An "equilateral" shape is one where all sides are of equal length. A common example of this is an equilateral triangle, which has three sides that are all the same length and three angles that are each 60 degrees. This symmetry makes equilateral shapes visually appealing and easy to recognize. In addition to triangles, other shapes can also be equilateral, such as an equilateral polygon. For instance, a square is equilateral because all four of its sides are equal. Equilateral shapes are often used in art, architecture, and design due to their balanced and harmonious appearance.