parallelograms - 5.3 -5.4 (new)

parallelogram

both pairs of opposite sides are parallel, both pairs of opposite angles are congruent, all consecutive angles are supplementary, diagonals bisect eachother, and one pair of opposite sides is both congruent and parallel

rectangle

EVERYTHING FROM A PARALLELOGRAM, all four interior angles are right angles, and all diagonals are congruent

rhombus

EVERYTHING FROM A PARALLELOGRAM, all four sides are congruent, the diagonals are perpendicular, all diagonals bisect opposite angles

square

EVERYTHING FROM A PARALLELOGRAM, all four sides are congruent, all four angles are right angles, the diagonals are congruent AND perpendicular, the diagonals bisect opposite angles

trapezoid

bases are parallel

isosceles trapezoid

bases are parallel, legs are congruent, diag are congruent, base angles are congruent