What theorems (about kites) are dynamically illustrated below? [br](Feel free to move its white vertices anywhere you'd like!)
[b][color=#000000]Theorems:[/color][/b][br][br]A kite has [color=#ff00ff][b]one pair[/b][/color] of [color=#ff00ff][b]opposite angles congruent[/b][/color]. [br][br]One diagonal of a kite bisects a pair of [color=#38761d][b]opposite[/b][/color] [color=#1e84cc][b]angles[/b][/color]. [br][br]One diagonal of a kite bisects the [color=#980000][b]other diagonal[/b][/color]. [br][br]The diagonals of a kite are [b]perpendicular[/b]. [br][br]Also note that this applet also illustrates the isosceles triangle theorem: If two sides of a triangle are congruent, then the angles opposite those sides are congruent!