1) Prove that the polygon with coordinates A (4, -1), B (5, 6), and C (1, 3) is an isosceles right triangle. a. Graph the figure b. Calculate the distances of all three sides showing ALL algebra steps and work c. Use the slope formula to prove that the two legs are perpendicular. Show ALL algebra steps and work. d. Using complete sentences, explain your findings to prove or disprove the problem. Findings:

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