SOLUTION: Use the concept of slope to determine whether the given figure is a right triangle (i.e., does the triangle contain a right angle?). Here are the coordinate points of the triangle.

Question 677084: Use the concept of slope to determine whether the given figure is a right triangle (i.e., does the triangle contain a right angle?). Here are the coordinate points of the triangle. (-2,5) and (6,1) and (-1,2). Is this a right triangle?
Answer by ReadingBoosters(3246) (Show Source): You can put this solution on YOUR website!
To form a right angle, the lines must be perpendicular.
Perpendicular lines have negative inverse slopes.
...
(-2,5) and (6,1)
slope =
...
(-2,5) and (-1,2)
slope =
...
(6,1) and (-1,2)
slope =
...
The endpoints do NOT create a right triangle, as not of the line segments are perpendicular.
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