Quadrilateral: A closed figure with four sides. For example, kites, parallelograms, rectangles, rhombuses, squares, and trapezoids are all quadrilaterals. Kite: A quadrilateral with two pairs of adjacent sides that are equal in length; a kite is a rhombus if all side lengths are equal.Click to see full answer. Similarly, you may ask, are Quadrilaterals squares?A rectangle is a quadrilateral with four right angles. Squares are quadrilaterals. Squares have four right angles. So, squares are rectangles! are all parallelograms trapezoids? Inclusive vs exclusive definition Others define a trapezoid as a quadrilateral with at least one pair of parallel sides (the inclusive definition), making the parallelogram a special type of trapezoid. Under the inclusive definition, all parallelograms (including rhombuses, rectangles and squares) are trapezoids. Also Know, are some triangles Quadrilaterals? Quadrilateral. In Euclidean plane geometry, a quadrilateral is a polygon with four edges (or sides) and four vertices or corners. Sometimes, the term quadrangle is used, by analogy with triangle, and sometimes tetragon for consistency with pentagon (5-sided), hexagon (6-sided) and so on.Are all squares Trapeziums?⇒ A trapezium is a quadrilateral with at least one pair of parallel sides. ⇒ In a square, there are always two pairs of parallel sides, so every square is trapezium. ∴ All squares are trapeziums.