A quadrilateral is a closed shape with four sides, angles, and vertices. All quadrilaterals have two diagonals and the sum of interior angles is 360°. The order of vertices must be preserved when naming quadrilaterals
A quadrilateral is a closed two-dimensional polygon with four sides. The total sum of interior angles in a quadrilateral is 360 degrees. The sum of interior angles formula is 180° * (n-2), where n is the number of sides
Trapezoid is a quadrilateral with four straight sides. Contains one pair of parallel sides called bases. Other two sides are called legs. Base angles are angles shared by base