$\"\"$

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

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Where $\"\"$ .

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

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

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$\"\"$

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

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$\"\"$

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$\"\"$

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$\"\"$ .

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Area of the triangle is $\"\"$

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$\"\"$ square units.

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$\"\"$ square units.

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$\"\"$

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