A quadrilateral with:
opposite sides parallel;
opposite sides congruent;
opposite angles congruent;
consecutive angles supplementary;
diagonals bisect each other;

One pair of opposite sides are congruent and parallel

Parallelogram with 4 right angles.

Diagonals are congruent.

All properties of a parallelogram.

Parallelogram with four congruent sides.

Diagonals are perpendicular.

Diagonals bisect a pair of opposite angles.

All properties of a parallelogram.

Parallelogram with 4 congruent sides

4 right angles.

Both a rectangle and rhombus.

Diagonals are congruent

Diagonals bisect eachother

diagonals are perpendicular

All properties of a parallelogram

One pair of parallel sides.

2 pairs of base angles

2 nonparallel sides(legs)

base angles are congruent

diagonals are congruent

Legs are congruent

Base angles are congruent

diagonals are congruent

opposite angles are supplementary

midsegment is parallel to the bases and its length is half the sum of the bases

Diagonals are perpendicular

One pair of opposite angles are congruent.

2 pairs of consecutive congruent sides

Opposite angles arent congruent