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Geometry

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Triangle ΔABC has vertices A(2,5), B(8,1) and C(-2,-1) and is a right triangle. If the slope of AB is -2/3 and the slope of AC is 3/2, are the lines parallel, perpendicular or neither?

  • Geometry -

    slopes of parallel lines are equal.
    slopes of perpendicular lines are
    negative reciprocals.

    What do you think?

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