The figure is a rectangle, which means it has four sides and four vertices. It also has four 90-degree angles, which are also called right angles. The opposite sides of the rectangle are parallel and congruent, meaning they have the same length. The two pairs of opposite sides are also perpendicular to each other, which means they intersect at right angles. The rectangle can be divided into two pairs of congruent right triangles, with the hypotenuses being the longer sides of the rectangle. The diagonals of the rectangle bisect each other and are congruent in length. Thus, the rectangle is a quadrilateral with equal adjacent sides, congruent opposite sides and angles, and perpendicular adjacent sides.
