\"\"

\

Area of a polygon is \"\"

\

\"\"  (Substitute \"\")

\

\"\"  (Simplify)

\

\"\"                                 (Add: \"\")

\

\"\"                                     (Modulus: \"\")

\

\"\"                                            (Divide: \"\")

\

The graph of the polygon is

\

\"graph

\

\"\"

\

The graph of the polygon is

\

\"graph

\

The area of the polygon is 20 square units.