SOLUTION: prove that the triangle with vertices (2 1) (6 9) and (-2 3) is a right triangle. determine which angles is 90 degree

SOLUTION: prove that the triangle with vertices (2 1) (6 9) and (-2 3) is a right triangle. determine which angles is 90 degree

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Question 817695: prove that the triangle with vertices (2 1) (6 9) and (-2 3) is a right triangle. determine which angles is 90 degree
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
(2, 1) (6, 9) and (-2, 3)
line (2, 1) (6, 9) and line (2,1) (-2, 3)form a right angle
line | y = 2 x-3
line | y = 2-x/2
slope 2 and -1/2
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