This document defines and provides properties of four special types of parallelograms: rectangles have four right angles and opposite sides that are parallel and congruent; rhombuses have all sides that are congruent and diagonals that bisect each other perpendicularly; squares are rhombuses with four right angles; and general parallelograms have two sets of parallel and congruent sides, opposite angles that are congruent, and diagonals that bisect each other and form two congruent triangles. It also gives formulas for perimeter and area.

1. Special Parallelograms Your small dictionary of fun and exciting shapes and properties!!!!

2. RECTANGLE it has four sides it has four right angles opposite sides are parallel opposite sides are congruent diagonals are congruent diagonals bisect each other

3. RHOMBUS it has four sides all sides are congruent opposite angles are congruent opposite sides are parallel diagonals bisect each other diagonals are perpendicular

4. SQUARE it has four sides all sides are congruent opposite sides are parallel it has four right angles opposite angles are congruent diagonals are perpendicular diagonals are congruent

5. The Parallelogram consecutive angles supplementary 2 sets of parallel sides 2 sets of congruent sides opposite angles congruent diagonals bisect each other diagonals form 2 congruent triangles 5cm 12cm 2 cm P=L*W P=12*2=24cm P=24cm A=bh A=12*5=60 A=60cm Perimeter Area