: By SharilynDuran Math B . Ms Sukhe r

PROPERTIES--Sum of all interior angles = 360--Opposite angles are congruent--Opposite sides are congruent & parallel--Diagonals divide parallelogram into two congruent triangles--Diagonals bisect each other--Sum of all exterior angles = 360--Two consecutive angles are supplementary = 180

A Square is a parallelogram with all congruent sides.

PROPERTIES--Opposite angles are congruent--All angles = 90--Diagonals bisect each other--Diagonals are perpendicular--Opposite angles are congruent--Sum of all interior & exterior angles= 360--Consecutive angles are supplementary =180--One diagonal cuts square into 2 congruent triangles

RHOMBUSRHOMBUSA rhombus is a parallelogram with all congruent sides.

PROPERTIES

--Sum of all interior & exterior angles = 360--Opposite angles are congruent--Consecutive angles are supplementary = 180--Diagonals bisect each other--Diagonals are perpendicular--Opposite sides are congruent--Diagonals bisect each angle

Area = d1 x d2 2

d= Diagonals

Perimeter = Add up all exterior sides.

PROPERTIES

--Diagonals bisect each other--Opposite sides -congruent--Opposite angles--Consecutive angles are supplementary= 180--Exterior & Interior angles = 360--Diagonals cut a rectangle into two congruent triangles--all properties of parallelogram

-A Rectangle is a parallelogram with right angles.