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Mathematics 8 Online
OpenStudy (anonymous):

Show that the points (-1,3),(0,5) and (3,1) are vertices of a right triangle. help me plz. tnx :)

hero (hero):

Graph them and use pythagorean theorem

OpenStudy (anonymous):

shall i get the slopes of the line first? then find out if the 1 angle is 90 degrees?

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