A trapezoid is a four-sided shape, known as a quadrilateral, that has at least one pair of parallel sides. The parallel sides are called the bases, while the other two sides are referred to as the legs. Trapezoids can vary in shape, with some having legs that are equal in length, making them isosceles trapezoids. In geometry, the area of a trapezoid can be calculated using the formula: Area = (1/2) × (Base1 + Base2) × Height. This formula helps determine the space within the trapezoid. Trapezoids are commonly found in architecture and design, showcasing their practical applications in everyday life.