Final answer:
A rectangle does not have all angles congruent and its diagonals are not perpendicular bisectors of each other.
Step-by-step explanation:
A rectangle is a quadrilateral with opposite sides that are equal in length and parallel to each other. Therefore, the properties that do not apply to a rectangle are:
- All angles are congruent. The angles of a rectangle are right angles, but they are not necessarily congruent.
- Diagonals are perpendicular bisectors of each other. The diagonals of a rectangle are indeed perpendicular, but they do not bisect each other.