A trapezoid is always a quadrilateral, as it is defined by having four sides, with at least one pair of parallel sides.
Step-by-step explanation:
A trapezoid is defined as a four-sided polygon, also known as a quadrilateral, that has at least one pair of parallel sides. Considering this definition, the word that makes the sentence true is.
always
A trapezoid is always a quadrilateral. This is because by definition, any four-sided shape is considered a quadrilateral. Trapezoids have two sides parallel which is a characteristic of quadrilaterals, but it's not necessary for a quadrilateral to have parallel sides; squares, rectangles, and rhombuses are also quadrilaterals because they have four sides, but they have additional properties. In contrast, a trapezoid is specifically defined by having only one pair of parallel sides.