Question 1012777
Show algebraically that this triangle is a right triangle. The triangle has the vertices P(-4,-3) Q(2,5) R(4,1)
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Find the lengths of the 3 sides.  Label the longest c.
If {{{c^2 = a^2 + b^2}}} it's a right triangle.  o/w it's not.
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Find the midpoint of the hypotenuse.
Show that this midpoint is equidistant from each of the vertices