Yahto and Nora want to find out if the quadrilateral formed by connecting points J, K, L, and M is a rectangle. Yahto's plan: • Use the distance formula to find the lengths of the sides. • Then see if the side lengths of opposite sides are the same. Nora's plan: • Find the slopes of the four sides. • See if the slopes of adjacent sides are negative reciprocals of each other. Which student's plan will work?