Math

Parallelograms
 1.A parallelogram is a quadrilateral with 2 pairs of parallel sides.
 2. Opposite sides and angles of a parallelogram are congruent(equal)
 3. The diagonals of a parallelogram bisect each other.
 4. Consecutive angles of a parallelogram are supplementary.

Rectangles
 is a parallelogram with 4 right angles.
 has all properties of a parallelogram.
 the diagonals are congruent

Rhombuses
 has 4 congruent sides.
 has everything like a parallelogram.
 diagonals are perpendicular.
 a diagonal of a rhombus bisects a pair of opposite angles of the rhombus.

Squares
 4 right angles and 4 congruent sides
 it is everything properties.