Parallelogram ABCD is a rectangle. What are the slopes of the sides that make this quadrilateral a rectangle?
-1/2 and 2
-2 and 1/2
.3 and 1/3
-1/3 and 3
![Parallelogram ABCD is a rectangle What are the slopes of the sides that make this quadrilateral a rectangle 12 and 2 2 and 12 3 and 13 13 and 3 class=](https://us-static.z-dn.net/files/d27/0d12bdce40b957af9e1fba981c8bdc7d.png)