Triangle 82

Triangle PQR has vertices located at (2, 2), (5, -4), and (-4, -1). What type of triangle is triangle PQR?

Correct answer:

x = right isosceles

Step-by-step explanation:

P=(2,2) Q=(5,4) R=(4,1)  r=dist(P,Q)=PQ=(PxQx)2+(PyQy)2=(25)2+(2(4))2=3 56.7082 q=dist(P,R)=PR=(PxRx)2+(PyRy)2=(2(4))2+(2(1))2=3 56.7082 p=dist(Q,R)=QR=(QxRx)2+(QyRy)2=(5(4))2+((4)(1))2=3 109.4868  r=q p>r;p>q p2=r2+q2=6.70822+6.70822=3 109.4868  P=90    x=rightisosceles

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