Types of Parallelograms

Types of Parallelograms

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What is a parallelogram?

Quick Review - Properties of Parallelograms

• Opposite sides are parallel

• Opposite sides are congruent

• Opposite angles are congruent

• Adjacent angles are supplementary

• Diagonals bisect each other

What is a Rhombus?

A rhombus is a parallelogram with all congruent sides.

The primary additional property of a rhombus vs a parallelogram is that the diagonals of a rhombus intersect at right angles.

What is a Rectangle?

The geometric definition of a rectangle is a parallelogram whose angles are all right angles (90 degrees).
The primary additional property of a rectangle is that the diagonals are equal in length, and the length of the diagonals can be found by $\sqrt{a^2+\ b^2}$  

Where a and b are the side lengths of the rectangle.