Which term describes a quadrilateral with two parallel sides?

• A. Trapezoid
• B. Parallelogram
• C. Rectangle
• D. Rhombus

Answer: (A)

A trapezoid is described by having a pair of opposite sides that are parallel, meaning those two sides run in the same direction and never meet. This is the simplest way to capture “two sides that are parallel” in a quadrilateral. In contrast, a parallelogram has two pairs of parallel sides (both pairs), which goes beyond just “two parallel sides” and is why that term isn’t the best fit for the given description. Rectangles and rhombuses are special parallelograms with extra properties (right angles or equal side lengths) and also have two pairs of parallel sides, so they don’t match the idea of describing a quadrilateral by having just that one parallel pair. So the term that best matches a quadrilateral with two parallel sides is trapezoid.