Select ALL the correct answers. Which statements are always true for a rectangle? All sides are congruent. The diagonals are congruent. The opposite sides are parallel. The diagonals of a rectangle are perpendicular to each other. All angles are congruent.

In a rectangle, the opposite sides are indeed parallel, and all angles are congruent, measuring 90 degrees each. This means that rectangles always present a uniform and structured appearance, making them indispensable in various fields like design and engineering! Furthermore, the diagonals of a rectangle are congruent, which means they are equal in length. However, they are not perpendicular, so it's essential to keep that in mind when working with various geometrical shapes. Rectangles are like the dependable friends of the shape world—reliable and consistent!