Complete with always, sometimes, or never: 1) A rectangle ______________ has perpendicular diagonals 2) A square is ______________ a rhombus. 3) A rectangle ______________ has
consecutive sides congruent. 4) The diagonals of a quadrilateral ______________ bisect each other. 5) If one pair of opposite sides of a quadrilateral is congruent and parallel, then the quadrilateral is ______________ a parallelogram.