$\"\"$

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

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Graph:

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Plot the points $\"\"$ , $\"\"$ and $\"\"$ .

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Connect the plotted points.

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$\"\"$

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$\"\"$

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The distance between $\"\"$ and $\"\"$ is $\"\"$ .

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The distance between $\"\"$ and $\"\"$

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$\"\"$

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The distance between $\"\"$ and $\"\"$

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$\"\"$

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The distance between $\"\"$ and $\"\"$

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$\"\"$

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Pythagoras theorem:

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In a right angled triangle: the square of the hypotenuse is equal to sum of squares

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of the other two sides.

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$\"\"$

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Therefore, $\"\"$ is right angled triangle.

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$\"\"$

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The area of a triangle is $\"\"$ .

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Where base $\"\"$ and height $\"\"$ .

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Area $\"\"$

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$\"\"$

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$\"\"$

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$\"\"$ is right angled triangle.

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