The applet below contains a quadrilateral that ALWAYS remains a parallelogram. The purpose of this applet is to help you understand many of the geometric properties a parallelogram has. Some of these properties are unique and only hold true for a parallelogram (and not just any quadrilateral). The questions you need to answer are displayed below this applet.
Are all four sides of parallelogram congruent?
Are opposite sides of a parallelogram [b]parallel[/b]?
Are opposite [b]sides [/b]of a parallelogram congruent?
Are opposite [b]angles [/b]of a parallelogram congruent?
Do the diagonals of a parallelogram [b]bisect [/b]each other?
Do the diagonals of a parallelogram bisect opposite angles?
Are the diagonals of a parallelogram perpendicular?
Are the diagonals of a parallelogram congruent?
Are the diagonals of a parallelogram congruent?
What is the sum of congruent angles in a parallogram? (A+B=?, A+D=?, etc)