SOLUTION: Use slopes to show that the square with vertices at (-2,5), (4,5), (4,-1), and (-2,-1)has diagonals that are perpendicular.

SOLUTION: Use slopes to show that the square with vertices at (-2,5), (4,5), (4,-1), and (-2,-1)has diagonals that are perpendicular.

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Question 119721: Use slopes to show that the square with vertices at (-2,5), (4,5), (4,-1), and (-2,-1)has diagonals that are perpendicular.
Answer by checkley71(8403) (Show Source): You can put this solution on YOUR website!
SLOPE BETWEEN (-2,5) & (4,-1) IS (-1-5)/(4+2)=-6/6=-1
SLOPE BETWEEN (4,5) & (-2,-1) IS (-1-5)/(-2-4)=-6/-6=1
THESE TWO SLOPES ARE NEGATIVE RECIPRICALS OF EACH OTHER THUS THESE LINES ARE PERPENDICULAR.
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