The vertices of a triangle are P(-1, 3), Q(2, -1), and R(5, 3). Choose all of the congruent sides of the triangle. PQ PR QR
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How can you prove a triangle is a right triangle? Select one: a. Use the distance formula to see if at least two sides are congruent. b. Use the slope formula to see if any sides are perpendicular. c. Use the distance formula to see if all three sides are congruent. d. Use the slope formula to see if any sides are parallel.
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