Simple Rectangle Plane Geometry Question From 2009-2010 ACT handout...Confused

<p>Hi, </p>

<p>Here is a link to the question: Image</a> - TinyPic - Free Image Hosting, Photo Sharing & Video Hosting</p>

<p>The question asks for 4th vertex of a rectangle which is of course a fairly simple question, but since the rectangle is slanted it appears that there can be more than one answer(unless I am of course missing something): </p>

<p>I am confused as to how I am supposed to differentiate between these two answers since they both appear to be correct. Thanks for any help you can provide.</p>

<p>what you drew on the left is not a rectangle. it’s more like a parallelogram. The picture on the right is correct.</p>