The first thing you should do in this case is find the distance between the points. The distance between two points can be thought of as a line. To find the length of this line, you can use the distance formula: d = √ (x2 - x1) ^ 2 + (y2 - y1) ^ 2 We have then: AC distance: AC = root ((5 - (-1)) ^ 2 + (-1 - (-3.5)) ^ 2) = 6.5 units AB distance: AB = root ((0.2 - (-1)) ^ 2 + (-3 - (-3.5)) ^ 2) = 1.3 units BC distance: BC = 6.5-1.3 = 5.2 units
