The applet below contains a quadrilateral that ALWAYS remains a rectangle. [br][br]The purpose of this applet is to help you understand many of the geometric properties a rectangle has. [br][br]Interact with this applet for a few minutes. As you do, be sure to move [b][color=#1e84cc]points [i]A[/i], [i]B[/i], and [i]D[/i][/color][/b] around! [br][br]What do you notice about the relationships of opposite sides?[br]What do you notice about the 4 angles?[br]What do you notice about the lengths of the diagonals?[br]Do the diagonals always bisect each other?[br]Are the diagonals perpendicular?[br]Are the diagonals angle bisectors?