Answer: Square
Step-by-step explanation:
Take the coordinates and graph them. If you then plug the coordinates into the slope formula for AB you get -3/2 and BC you get -2/3 and CD you get 3/-2 and for AD you get 2/-3 or -2/3. If you then look at it opposite reciprocals which proves that its a square just rotated. I also put square in the test and it was right.