Rectangles have two properties that are not included in the definition. The opposite sides of a rectangle are always of equal length, and the opposite sides of a rectangle are always parallel.Why can't these two properties define a rectangle? Chose the right answers.
A. A rhombus is also a quadrilateral whose opposite sides are parallel and equal in length.
B. The two opposite-side properties can be an alternate way to define a rectangle.
C. Only some rectangles have congruent and parallel opposite sides.
D. The two properties are biconditional, and a definition cannot be biconditional.