
four sided figure
quadrilateral

two sets of congruent adjacent sides, opposite sides not congruent, diagonals bisect two opposite angles, diagonals perpendicular
kite

one set of parallel opposite sides, midsegment parallel to bases, average length of two bases is midsegment
trapezoid

two congruent legs, congruent diagonals, congruent base angles
isosceles trapezoid

two pairs of parallel opposite sides, two pairs of opposite congruent sides, two pairs of congruent opposite angles, diagonals bisect each other, consecutive angles are supplementary
parallelogram

four right angles and congruent diagonals
rectangles

all sides congruent, perpendicular diagonals, diagonals bisect angles
rhombus

4 right angles, 4 congruent sides
square

