$\"\"$

\

The vertices are $\"\"$ , $\"\"$ , $\"\"$ and $\"\"$ .

\

Determine the quadrilateral $\"\"$ is a parallelogram.

\

For a parallelogram $\"\"$ $\"\"$

\

Find $\"\"$ .

\

$\"\"$

\

Find $\"\"$ .

\

$\"\"$

\

Since $\"\"$ , the quadrilateral form of parallelogram.

\

$\"\"$

\

Find area of the parallelogram.

\

$\"\"$

\

$\"\"$

\

Find area:

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

Therefore ,the area of the parallelogram is $\"\"$ sq-units.

\

$\"\"$

\

Find $\"\"$ :

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

Hence, $\"\"$ and $\"\"$ .

\

Since $\"\"$ and $\"\"$ , the quadrilateral does not form a rectangle.

\

$\"\"$

\

Since $\"\"$ , the quadrilateral form of parallelogram.

\

The area of the parallelogram is $\"\"$ sq-units.

\

Since $\"\"$ and $\"\"$ , the quadrilateral does not form a rectangle.