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Mathematics 20 Online
OpenStudy (anonymous):

how do you show that a triangle with vertices R(-3,5), S(12,2), and T(3,-4) is a right triangle

OpenStudy (anonymous):

you find that the slope of two of the sides are perpendicular (negative reciprocals). Find the slopes of the lines defining the three sides and see if any are negative reciprocals.

OpenStudy (anonymous):

by graph the coordinates

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