The edges are the lines that make up the boundary of the shape. Each point where two straight edges intersect is a vertex. A triangle has three edges -- its three sides. It also has three vertices, which are each corner where two edges meet.
Ok so the rise is the 6 and 172 is your run which this is how to find the slope using the fraction/ equation rise/ run which gives you the answer of 28.666666 and on and on which is not an acceptable slope I believe the question is a little confusing <span />
