$\"\"$

\

The area of the triangle with vertices are $\"\"$ and $\"\"$ is $\"\"$ .

\

Where $\"\"$ .

\

From figure shown $\"\"$ and $\"\"$ values are $\"\"$ and $\"\"$ .

\

Substitute the $\"\"$ and $\"\"$ in $\"\"$ .

\

$\"\"$

\

Let $\"\"$ , then $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$ .

\

Area of the triangle is $\"\"$

\

$\"\"$ square units.

\

$\"\"$ square units

\

$\"\"$

\

Area of the triangle is $\"\"$ square units.