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in Coordinate Geometry by (47.8k points)
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Determine whether the points are vertices of a right triangle A(-3, -4), B(2, 6) and C(-6, 10).

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by (47.4k points)
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Best answer

Using the distance formula 

Hence ABC is a right angled triangle since the square of one side is equal to sum of the squares of the other two sides.

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