Quadrilateral 7

Use your prior knowledge and the knowledge you've gained in this chapter to precisely name this quadrilateral. Do NOT take short cuts, they only short change your ability to learn.
First, use the points and arithmetic to determine the slopes and lengths of each side of the quadrilateral. What type of quadrilateral do you think this is? Using the tools available in this applet, check your conclusion. Was your conclusion correct? How do you know? Explain fully.